Blog | I learned today that one of my tutoring students actually checks my changelog. Hi! :) | 2018-02-16 | 23:51 | |||||

Blog | Besides editing cribsheets, I am in the middle of editing an article for a physics education journal | 2018-02-16 | 23:52 | |||||

Blog | The article went to the publisher this past week! | 2018-03-10 | 23:50 | |||||

Blog | The article was published: https://doi.org/10.1119/1.5028250 | 2018-03-24 | 1:40 | |||||

Comment | COMMENT | Illustrator can leave edge artifacts on PNGs I need to PhotoShop out | 2017-12-14 | 12:15 | ||||

Comment | Medium | COMMENT | AP Physics 1 | 3.3 | Spring force | It bothers me that some forces are not illustrated, but I'm not using net force to study acceleration | 2018-01-04 | |

Comment | COMMENT | AP Physics 1 | 7.1 | Work done by a force | The displacement vector looks like a force. That's confusing. | 2018-01-04 | ||

Comment | Medium | COMMENT | AP Physics 1 | 7.2.1 | Potential energy | It bothers me that some forces are not illustrated, but I'm not using net force to study acceleration | 2018-01-04 | |

Comment | COMMENT | AP Physics 1 | Comparing cribsheets, I see that some of the force arrows for Fspring are bold (vector), some are Italic (magnitude) | 2018-01-04 | ||||

Comment | COMMENT | (Technical) | bbbbb | 2018-01-18 | 0:52 | |||

Comment | COMMENT | Hunch: Was there something on a cribsheet that lacked the subscript "AVG"? | 2018-01-29 | 13:03 | ||||

Comment | Cosmetic | Image cut off artifact seen in AP Phy C EM E1.3 does not appear in another PDF containing same conductor equilibrating figure in | 2018-02-05 | 23:36 | ||||

Comment | COMMENT | AP Physics 1 | 5.2 | Not-necessarily-conservation laws | Checked there is no overbrace on the extra work term referring to net work | 2018-02-07 | 12:54 | |

Comment | COMMENT | AP Physics 1 | 5.1 | Impulse delivered by a force | Noticed that the initial pictures don't seem to show acceleration (OK bc force might not have been present before ti) | 2018-02-07 | ||

Comment | Cosmetic | In AP Phy 1/C Mech 8.1 look again in a few days at placement of rot. kinematics figure in page | 2018-02-12 | 13:27 | ||||

Comment | Cosmetic | AP Calculus BC | 5.1 | Series, tests, and remainders | Come back in a few days to look at alignment of words in absolute convergence chart | 2018-02-14 | 13:53 | |

Comment | Cosmetic | AP Physics | Consider a different convention for dashed bubbles: Tightly shrink-wrapped around system to avoid inadvertently including non-syst | 2018-03-09 | 21:26 | |||

COMMEN | Medium | Cosmetic | AP Physics 2 | 12.8 | Capacitors | Add voltage braces to energy storage figure (this was already done at some point) | 2018-06-04 | 16:24 |

Comment | Tedious | Cosmetic | AP Physics 1 | 10.2 | SHM UCM connection | Some ghost image springs are missing (there are three snapshot springs) | 2018-06-13 | 23:55 |

Comment | Copy fig | Cosmetic | AP Physics 1 | 10.3 | SHM cribsheet | Some ghost image springs are missing (there are three snapshot springs) | 2018-06-13 | 23:55 |

Comment | COMMENT | Zoom in styles for electric force, electric field/potential, line integral work, line integral Delta V, residual strong force on several cribsh | 2018-06-20 | 22:13 | ||||

Comment | Comment | AP Physics 1 | 5.1 | Impulse delivered by a force | Spacing between initial & final slightly different in impulse & work handouts, not sure either spacing is correct | 2018-06-22 | 2:15 | |

Comment | Comment | AP Physics 1 | 7.1 | Work done by a force | Spacing between initial & final slightly different in impulse & work handouts, not sure either spacing is correct | 2018-06-22 | 2:15 | |

Comment | Comment | AP Physics 1 | Consider (during wakefulness): Whether spacings for 5.1 & 7.1 need to be consistent across handouts; are scalings correct within | 2018-06-22 | 2:19 | |||

Comment | COMMENT | AP Physics 1 | I think one of the figure sets (momentum?) was made first; am I creating vague memories of nudging by dead-reckoning ghost ima | 2018-06-22 | 2:34 | |||

Comment | Comment | Recently added imitation old CS6 arrowhead into newer Illustrator arrowhead inventory (can fix SHM-UCM and some rotational arro | 2018-06-25 | 0:21 | ||||

Comment | Comment | AP Physics 1 | 8.2 | Torque and rotational inertia | Complaint: Missing visual indication that force is sustained throughout push in each example case | 2018-07-02 | ||

Comment | Easy | Cosmetic | AP Physics 1 | 11.1 | Waves | Change lowercase m to uppercase m (for string); CANCELLED: Stay consistent with typesetting in AP exam | ||

Comment | Easy | Cosmetic | AP Physics 1 | 11.2 | Speed of wave on string | Change lowercase m to uppercase m (for string); CANCELLED: Stay consistent with typesetting in AP exam | ||

Comment | COMMENT | AP Physics 1 | 12.1 | Electric charge and force | (Also affects Physics C EM): Charging by induction has slight polarization in the third panel, but not the second | |||

Comment | Tedious | Missing item | AP Physics 1 | 12.3.1 | Electric potential | Sign of the test charge in the hand-does-work snapshots seems to be deliberately omitted | ||

Comment | Easy | COMMENT | AP Physics 1 | 7.2.1 | Potential energy | Could add scale to grid for gravitational potential energy, but don't have to | ||

Comment | Medium | Cosmetic | AP Physics 2 | 7.2.2 | Potential energy landscapes | (Also for Physics C Mech): Few days after 2018/06/10, check aesthetics of vertical alignment of Delta v vectors | ||

Comment | Easy | Cosmetic | AP Physics C EM | E1.2 | Electric fields and potentials with calc | Intentional?: Unneeded faint line for one of the faint pieces of tofu in the integrate-over-potato-to-get V picture | ||

Comment | Medium | Cosmetic | AP Physics C Mech | A.1 | Spatial integrals for AP Physics C Me | Intentional?: Unneeded faint line for one of the faint pieces of tofu in the integrate-over-potato picture | ||

Comment | Tedious | Cosmetic | A lot of the calculus cribsheets of kerning errors or hyphens in place of what should be minus signs | |||||

No rush | Comment | AP Physics C Mech | 8.1 | Rotational kinematics and dynamics c | Consider whether to delete dL/dt = Net Tau | 2018-02-09 | ||

No rush | Tedious | Cosmetic | In many files, a hyphen has been incorrectly used where a negative or, perhaps, subtraction, sign should have been | 2018-03-10 | 23:50 | |||

No rush | Comment | 17.1 | Quantum physics | Pressing CTRL + "+" could have made some text subscripted without being noticed - think it's OK; nudge photon blue dashed arro | 2018-06-15 | 16:05 | ||

No rush | Tedious | Cosmetic | AP Calculus AB | (Multiple) | Kerning and alignment errors throughout | |||

No rush | Medium | Missing item | AP Calculus BC | 5.1 | Series, tests, and remainders | Add ghost images of the "left" blocks for integral test (no rush because AP course doesn't really require proofs) | ||

No rush | Tedious | Cosmetic | AP Calculus BC | (Multiple) | Kerning and alignment errors throughout | |||

No rush | Tedious | Cosmetic | AP Physics 1 | 4.5 | Gravitation | Long-term: Redraw hands to touch each other | ||

No rush | Easy | Cosmetic | AP Physics 1 | 5.0 | Newt 2 can be re-expressed | Text in momentum and energy columns misaligned | ||

No rush | Medium | Cosmetic | AP Physics 1 | 10.3 | SHM Ignoring gravity | Adjust vertical alignment of text in tables and corresponding figure parts | ||

No rush | Tedious | Cosmetic | AP Physics 1 | 12.1 | Electric charge and force | Long-term: Redraw hands to touch each other | ||

No rush | Medium | Cosmetic | AP Physics 1 | 12.4 | Current | A few days after 2018/05/24, check nudging/spacing of table of current formulas | ||

No rush | Tedious | Beyond scope | AP Physics 1 | 12.4 | Current | Increase accuracy of battery diagram (necessary to illustrate a redox reaction?) | ||

No rush | Medium | Cosmetic | AP Physics 1 | 7.2.1 | Potential energy | Add force arrows on stationary "ends" (Earth, wall) | ||

No rush | Easy | Cosmetic | AP Physics 1 | (Multiple) | Remove most of the SiQuENC sheets | |||

No rush | Tedious | Cosmetic | AP Physics 2 | 12.8 | Capacitors | Fine sizing (not just set figures all to 16.25%) - probably not isolated problem | ||

No rush | Tedious | Missing item | AP Physics 2 | 13.1 | Magnetism | Figures don't illustrate relationships between variables using multiple cases (less detail than Coulomb's law cases figs) | ||

No rush | Tedious | Missing item | AP Physics 2 | 14.1 | Electromagnetism | Add a magnetic field line conserving argument for Lenz | ||

No rush | Tedious | Cosmetic | AP Physics C EM | E1.1 | Electric charge and force | Long-term: Redraw hands to touch each other | ||

No rush | Tedious | Missing item | AP Physics C EM | E1.2 | Electric fields and potentials with calc | Other representative differential displacements and local E vectors missing from 1st picture of path (annoying to calculate individual E vectors) | ||

No rush | Tedious | Cosmetic | AP Physics C EM | E1.5 | Capacitors | Fine sizing (not just set figures all to 16.25%) - probably not isolated problem | ||

No rush | Medium | Cosmetic | AP Physics C EM | E2.1.1 | Current | A few days after 2018/05/24, check nudging/spacing of table of current formulas | ||

No rush | Tedious | Beyond scope | AP Physics C EM | E2.1.1 | Current | Increase accuracy of battery diagram (necessary to illustrate a redox reaction?) | ||

No rush | Copy figs | Missing item | AP Physics C EM | N1.1 | Electromagnetism | Add a magnetic field line conserving argument for Lenz | ||

No rush | Easy | Cosmetic | AP Physics C Mech | 7.1.2 | Work done along a path | (Postponed) Label point P on diagram and update steps list accordingly | ||

Queued | Tedious | Missing item | AP Physics 1 | 5.5 | Opt momentum transfer | Add velocity vectors, momentum bar chart, & modify opacities on whooshies and explosions | ||

Queued | Medium | Cosmetic | AP Physics 1 | 8.1 | Rotational kinematics and dynamics c | Ang mom figure: Move velocity label; check nudging of ang. mom figure in page | ||

Queued | Easy | Cosmetic | AP Physics 1 | 8.1 | Rotational kinematics and dynamics c | Change order in which torque, Newt II of rotational motion, and rotational inertia are listed | ||

Queued | Tedious | Cosmetic | AP Physics 1 | 8.2 | Torque and rotational inertia | In a few days after 2018/04/11, check perspective on big angular acceleration arc | ||

Queued | Tedious | Missing item | AP Physics 1 | 10.2 | SHM cribsheet | Cases: vary m, vary k (IBL) | ||

Queued | Tedious | Cosmetic | AP Physics 1 | 10.5 | Resonance | Adjust thicknesses in FBDs for block mass | ||

Queued | Medium | Missing item | AP Physics 1 | 11.1 | Waves | Add a bubble to a representative wall molecule in standing wave diagram; add FBD to explain inversion | ||

Queued | Medium | Cosmetic | AP Physics 1 | 11.1 | Waves | Ghost images and whooshies for resultant wave are missing | ||

Queued | Easy | Cosmetic | AP Physics 1 | 12.1 | Electric charge and force | Change document raster setting to 300 ppi (not 72 ppi) | ||

Queued | Tedious | Cosmetic | AP Physics 1 | 12.1 | Electric charge and force | Coulomb cases: Hyphen to minus, final page: Hyphen to minus | ||

Queued | Tedious | Cosmetic | AP Physics 1 | 12.4 | Current | KLR: Background charge icon: Hyphen to minus | ||

Queued | Medium | Cosmetic | AP Physics 1 | 12.5 | DC (equilibrated) operation | Were current variable labels deliberately omitted in the bottom two figures to avoid asserting equality with original I? | ||

Queued | Tedious | Cosmetic | AP Physics 1 | 12.3.1 | Electric potential | Background charge icon: Hyphen to minus | ||

Queued | Tedious | Missing item | AP Physics 1 | 12.3.1 | Electric potential | Equilibration of conductor: Energy bar chart showing easiness of easy path | ||

Queued | Tedious | Missing item | AP Physics 1 | 12.3.1 | Electric potential | Equilibration of conductor: Show force vectors (on repelled electrons fleeing away) | ||

Queued | Medium | Missing item | AP Physics 1 | 12.3.1 | Electric potential | Some representation that the equilibrated potato is an equipotential set | ||

Queued | Tedious | Missing item | AP Physics 2 | 7.5 | Fluid mechanics | Bernoulli: Add energy & energy-density bar charts (superificially same) (MR); dashed bubble; label Delta ells and "middle region" so | ||

Queued | Medium | Cosmetic | AP Physics 2 | 12.8 | Capacitors | Adjust alignment of right ends of electric field lines in work-done-charging-capacitor figure | ||

Queued | Tedious | Cosmetic | AP Physics 2 | 12.8 | Capacitors | Change dipole hyphens to minuses | ||

Queued | Medium | Cosmetic | AP Physics 2 | 12.8 | Capacitors | Work-done-charging: Remove tubes, add more ghost images, add hand | ||

Queued | Medium | Missing item | AP Physics 2 | 15.1 | Physical (wave) optics | Add a bubble to a representative wall molecule in wave reflection diagrams; add FBD to explain inversion | ||

Queued | Medium | Cosmetic | AP Physics 2 | 15.1 | Physical (wave) optics | In EM wave figure, label polarization | ||

Queued | Copy fig | Cosmetic | AP Physics 2 | 17.1 | Quantum physics | In EM wave figure, label polarization | ||

Queued | Tedious | Missing item | AP Physics 2 | 18.1 | Thermo second law | Add page on iso[insertnameofquantity] processes & graphical representations; cannot go earlier bc mention adiabatic | ||

Queued | Tedious | Cosmetic | AP Physics 2 | 12.3.2 | Electric fields and potentials | Background charge icon: Hyphen to minus | ||

Queued | Tedious | Missing item | AP Physics 2 | 17.2.1 | Special relativity | add E = sqrt(m^2c^4 + p^2c^2) relationship | ||

Queued | Tedious | Missing item | AP Physics 2 | 7.2.2 | Potential energy landscapes | Isolines figure: Make a hand with FBD; show Delta l parallel, show energy bar chart; show v = 0 (MR) | ||

Queued | Copy | Cosmetic | AP Physics C EM | E1.1 | Electric charge and force | Copy from AP Physics 1 after fixing raster setting | ||

Queued | Copy | Cosmetic | AP Physics C EM | E1.1 | Electric charge and force | Coulomb cases: Hyphen to minus, final page: Hyphen to minus | ||

Queued | Tedious | Cosmetic | AP Physics C EM | E1.2 | Electric fields and potentials with calc | Background charge icon: Hyphen to minus (also on second page in two places) | ||

Queued | Copy fig | Missing item | AP Physics C EM | E1.3 | Conductors near equilibrium | Equilibration of conductor: Energy bar chart showing easiness of easy path | ||

Queued | Copy fig | Missing item | AP Physics C EM | E1.3 | Conductors near equilibrium | Equilibration of conductor: Show force vectors (on repelled electrons fleeing away) | ||

Queued | Copy fig | Missing item | AP Physics C EM | E1.3 | Conductors near equilibrium | Some representation that the equilibrated potato is an equipotential set | ||

Queued | Tedious | Cosmetic | AP Physics C EM | E1.4 | Gauss's Law | Source charge icon: Hyphen to minus | ||

Queued | Copy | Cosmetic | AP Physics C EM | E1.5 | Capacitors | Copy updated file after making lots of changes to AP Physics 2 copy of capacitors sheet | ||

Queued | Tedious | Cosmetic | AP Physics C EM | E2.1.1 | Current | KLR: Background charge icon: Hyphen to minus | ||

Queued | Tedious | Missing item | AP Physics C EM | M1.1 | Magnetism with calculus | Illustrate various dB generated by various differential current elements (MR) | ||

Queued | Copy fig | Cosmetic | AP Physics C EM | N2.1 | Maxwell's equations | In EM wave figure, label polarization | ||

Queued | Medium | Cosmetic | AP Physics C Mech | 8.1 | Rotational kinematics and dynamics c | Ang mom figure: Move velocity label | ||

Queued | Copy fig | Missing item | AP Physics C Mech | 7.2.2 | Potential energy landscapes calc | Isolines figure: Make a hand with FBD; show Delta l parallel, show energy bar chart; show v = 0 (MR) | ||

Queued | Tedious | Missing item | Classical Mechanics | 1.1 | Euler-Lagrange cribsheet | Create cribsheet, illustrate with discretized example motivating Euler-Lagrange equation | ||

Queued | Medium | Missing item | Make and solve phys | T.0 | SiQuENC for AP Physics | Add bank of "allowed sentences" for qualitative reasoning | ||

Queued | Medium | Missing item | Make and solve phys | T.0 | SiQuENC for AP Physics | Add stick figures to visualized deductive reasoning example | ||

Queued | Tedious | Missing item | Make and solve phys | Multiple-choice/multi-select problem type inventory | ||||

Queued | Tedious | Missing item | Quantum mechanics | Decoherence | Create cribsheet | |||

Released | SYNC | (Master folder) | 2019-12-13 | 1:35 | ||||

Released | Restarted changelog (previous changes in changelog-20191213) | 2019-12-13 | 1:42 | |||||

Released | SYNC | (Master folder) | 2019-12-13 | 1:43 | ||||

Released | Easy | Cosmetic | AP Calculus AB | 4.3 | Using integrals for volumes | Adjusted line spacings in text/formulas | 2019-12-13 | 23:39 |

Released | Easy | Cosmetic | AP Calculus AB | 4.2 | Using integrals for areas | Added non-standard outer glow behind label f_AVG in f_AVG figure (make appearance more consistent with appearance of f©) | 2019-12-13 | 23:43 |

Released | Medium | Cosmetic | AP Physics 2 | 12.8 | Capacitors | Draft: Capacitor charging: Dashed bubble around first snapshot, added hand ghost images with streaks to all 3 snapshots | 2019-12-14 | 0:16 |

Released | Copy | Cosmetic | AP Physics C EM | E1.5 | Capacitors | Draft: Capacitor charging: Dashed bubble around first snapshot, added hand ghost images with streaks to all 3 snapshots | 2019-12-14 | 0:18 |

Released | SYNC | (Master folder) | 2019-12-14 | 0:45 | ||||

Released | Copy | Cosmetic | AP Physics C EM | E1.5 | Capacitors | Draft: Slightly modify curved whooshy for all 3 copies of thumb for capacitor charging figure, made dashed bubble go all the way to | 2019-12-15 | 0:00 |

Released | Easy | Cosmetic | AP Physics 1 | 5.1 | Impulse delivered by a force | Area under Fx vs. t graph: Subscript F_1,x changed to F_x,1, in text replaced index i with index k | 2019-12-15 | 13:31 |

Released | Copy | Cosmetic | AP Physics C Mech | 5.1 | Impulse delivered by a force | Area under Fx vs. t graph: Subscript F_1,x changed to F_x,1, in text replaced index i with index k | 2019-12-15 | 13:33 |

Released | Easy | Cosmetic | AP Physics 1 | 7.1 | Work done by a force | Work done by a varying force: In text subscript index i changed to subscript index k | 2019-12-15 | 23:36 |

Released | Copy | Cosmetic | AP Physics C Mech | 7.1 | Work done by a force | Work done by a varying force: In text subscript index i changed to subscript index k | 2019-12-15 | 23:38 |

Released | Easy | Cosmetic | AP Calculus AB | 2.4 | Extrema | Changed intro to closed interval method to include phrase "Candidates test for", deleted colon | 2019-12-15 | 23:41 |

Released | Easy | Cosmetic | AP Physics 2 | 12.8 | Capacitors | Draft: Slightly modify curved whooshy for all 3 copies of thumb for capacitor charging figure, made dashed bubble go all the way to | 2019-12-15 | 23:58 |

Released | Easy | Cosmetic | AP Physics 1 | 5.1 | Impulse delivered by a force | F-t graph: redid glow on Delta t | 2019-12-17 | 0:42 |

Released | Copy | Cosmetic | AP Physics C Mech | 5.1 | Impulse delivered by a force | F-t graph: redid glow on Delta t | 2019-12-17 | 0:44 |

Released | Easy | Cosmetic | AP Physics 1 | 7.1 | Work done by a force | F-ell graph: redid glow on Delta ell | 2019-12-17 | 0:49 |

Released | Copy | Cosmetic | AP Physics C Mech | 7.1 | Work done by a force | F-ell graph: redid glow on Delta ell | 2019-12-17 | 0:54 |

Released | Easy | Cosmetic | AP Physics 1 | 7.1 | Work done by a force | F-ell graph page: Added missing period at end of text | 2019-12-17 | 1:10 |

Released | Copy | Cosmetic | AP Physics C Mech | 7.1 | Work done by a force | F-ell graph page: Added missing period at end of text | 2019-12-17 | 1:12 |

Released | Easy | Cosmetic | AP Physics 1 | 8.1 | Rotational kinematics and dynamics c | Removed subscript "F" from formula for work done by a torque | 2019-12-17 | 1:17 |

Released | Easy | Cosmetic | AP Physics C Mech | 8.1 | Rotational kinematics and dynamics c | Removed subscript "F" from formula for work done by a torque | 2019-12-17 | 1:23 |

Released | Easy | Cosmetic error | AP Physics 1 | 5.1 | Impulse delivered by a force | F-t graph page: Summation lower bound index changed from i to k | 2019-12-17 | 15:39 |

Released | Copy | Cosmetic error | AP Physics C Mech | 5.1 | Impulse delivered by a force | F-t graph page: Summation lower bound index changed from i to k | 2019-12-17 | 15:40 |

Released | Easy | Cosmetic error | AP Physics 1 | 7.1 | Work done by a force | Fparallel-ell graph page: Summation lower bound inex changed from i to k | 2019-12-17 | 15:43 |

Released | Copy | Cosmetic error | AP Physics C Mech | 7.1 | Work done by a force | Fparallel-ell graph page: Summation lower bound inex changed from i to k | 2019-12-17 | 15:45 |

Released | Medium | Missing item | AP Physics 1 | 8.1.2 | Accruing effects of varying torques | DRAFT: Created chart to compare linear impulse and angular impulse and to compare work done by a force and work done by a to | 2019-12-17 | 15:59 |

Released | Copy | Missing item | AP Physics C Mech | 8.1.2 | Accruing effects of varying torques | DRAFT: Created chart to compare linear impulse and angular impulse and to compare work done by a force and work done by a to | 2019-12-17 | 16:00 |

Released | SYNC | (Master folder) | 2019-12-17 | 16:01 | ||||

Released | Easy | Small missing i | AP Physics 1 | 8.1 | Rotational kinematics and dynamics c | Added faint corkscrew to subscript of omega_AVG (omega_corkscrew,AVG); removed "Definitions | Relationships" row in kinemati | 2019-12-20 | 20:53 |

Released | Easy | Small missing i | AP Physics C Mech | 8.1 | Rotational kinematics and dynamics c | Added faint corkscrew to subscript of omega (omega_corkscrew); removed "Definitions | Relationships" row in kinematics | 2019-12-20 | 20:56 |

Released | SYNC | (Master folder) | 2019-12-20 | 20:58 | ||||

Released | Easy | Cosmetic | AP Calculus AB | 3.1 | Definite integrals and area | Changed title from 'Definite integral formalizes notion of area under curve' to 'Definite integral formalizes notion of signed area "under" curve' | 2019-12-21 | 0:31 |

Released | Easy | Cosmetic | AP Physics 1 | 5.1 | Impulse delivered by a force | Changed title to mention "object" | 2019-12-21 | 0:40 |

Released | Copy | Cosmetic | AP Physics C Mech | 5.1 | Impulse delivered by a force | Changed title to mention "object" | 2019-12-21 | 0:41 |

Released | Easy | Cosmetic | AP Physics 1 | 7.1 | Work done by a force | Changed title to mention "object" | 2019-12-21 | 0:43 |

Released | Copy | Cosmetic | AP Physics C Mech | 7.1 | Work done by a force | Changed title to mention "object" | 2019-12-21 | 0:44 |

Released | SYNC | (Master folder) | 2019-12-21 | 0:45 | ||||

Released | Easy | Small error | AP Calculus AB | 4.3 | Using integrals for volumes | Volume of solid of revolution: Updated text about exchanging x and y, added optional text referring to labeling corners of slice, graye | 2019-12-24 | 10:25 |

Released | Easy | Cosmetic | AP Calculus BC | 4.6 | Arc lengths and surfaces of revolution | Small updates to text instructions for setting up surface of revolution problems | 2019-12-24 | 10:34 |

Released | Easy | Small missing i | AP Calculus BC | 3.6 | Integration by parts | Added figure panels for/based on product rule for derivatives, added derivation in terms of f and g rectangular areas | 2019-12-24 | 12:51 |

Released | Easy | Cosmetic | AP Calculus AB | 3.1 | Definite integrals and area | Limiting process: Last panel: Moved Delta x arrow to different rectangle, added f(x_i^*) arrow/label | 2019-12-24 | 18:59 |

Released | Easy | Cosmetic | AP Physics 1 | 7.2.1 | Potential energy | Draft: p. 2 Putative conserved quantity situations figure: Adjusted dashed bubble shape | 2019-12-24 | 19:32 |

Released | Copy | Cosmetic | AP Physics C Mech | 7.2.1 | Potential energy | Draft: p. 2 Putative conserved quantity situations figure: Adjusted dashed bubble shape | 2019-12-24 | 19:33 |

Released | Easy | Cosmetic | AP Calculus AB | 2.1 | Derivatives | Product rule 3d figure: Removed small foreground portion of graph of y = g(x) | 2019-12-25 | 18:59 |

Released | Copy fig | Cosmetic | AP Calculus BC | 3.6 | Integration by parts | Product rule 3d figure: Removed small foreground portion of graph of y = g(x) (give more leeway for integration figure to possibly be | 2019-12-25 | 19:01 |

Released | Easy | Cosmetic | AP Physics C EM | E1.4 | Gauss's Law | Electric flux: E-vector label hor. centered then shifted 2 px left | 2019-12-25 | 19:36 |

Released | Easy | Cosmetic | AP Physics 2 | 14.1 | Electromagnetism | Magnetic flux: B-vector label hor. centered then shifted 2 px left | 2019-12-25 | 19:40 |

Released | Copy fig | Cosmetic | AP Physics C EM | N1.1 | Electromagnetism | Magnetic flux: B-vector label hor. centered then shifted 2 px left | 2019-12-25 | 19:44 |

Released | SYNC | (Master folder) | 2019-12-25 | 19:46 | ||||

Released | Easy | Cosmetic | AP Physics 1 | 12.4 | Current | Updated KLR text | 2019-12-26 | 21:49 |

Released | Easy | Cosmetic | AP Physics C EM | E2.1.1 | Current | Updated KLR text, updated I-in-terms-of-charge-carriers formula (underbrace for I), updated formatting of |P| = |d(QDeltaV)/dt| | 2019-12-26 | 21:50 |

Released | Easy | Cosmetic | AP Physics 1 | 4.5 | Gravitation | Both common-separation r double-headed arrows in right column: shift down 20 px to avoid almost touching dashed bubble at top | 2019-12-27 | 23:52 |

Released | Copy | Cosmetic | AP Physics C Mech | 4.5 | Gravitation | Both common-separation r double-headed arrows in right column: shift down 20 px to avoid almost touching dashed bubble at top | 2019-12-27 | 23:53 |

Released | Medium | Missing item | AP Physics 1 | 12.4 | Current | Draft: Added phrase "Definition of resistance", resistor expressions rearranged, Electric power: Added dashed bubble around syste | 2019-12-28 | 2:24 |

Released | Tedious | Missing item | AP Physics C EM | E2.1.1 | Current | Draft: Added drift velocity starburst diagram, Added phrase "Definition of resistance", resistor expressions rearranged, Electric powe | 2019-12-28 | 2:25 |

Released | SYNC | (Master folder) | 2019-12-28 | 2:28 | ||||

Released | Easy | Cosmetic | AP Physics 1 | 5.2 | Not-necessarily-conservation laws | Equation for impulse-momentum: changed EXT ON SYS to EXT\rightarrowSYS | 2019-12-28 | 23:58 |

Released | Copy | Cosmetic | AP Physics C Mech | 5.2 | Not-necessarily-conservation laws | Equation for impulse-momentum: changed EXT ON SYS to EXT\rightarrowSYS | 2019-12-28 | 23:59 |

Released | Easy | Cosmetic | AP Physics C EM | E2.3.1 | Mnemonic for exponential decays | Changed subscript for y_{max} to y_{MAX} | 2019-12-29 | 0:02 |

Released | Easy | Cosmetic | AP Physics C EM | E2.3.1 | RC Charging | Changed title to indicate charging occurring, changed CsquiggleE - Q \geq 0 to CsquiggleE - Q > 0 | 2019-12-29 | 0:05 |

Released | Easy | Cosmetic | AP Physics C EM | N1.3 | LR Increasing current | Changed title to indicate increasing current occurring | 2019-12-29 | 0:07 |

Released | SYNC | (Master folder) | 2019-12-29 | 0:09 | ||||

Released | Easy | Cosmetic | AP Physics C EM | E2.3 | RC Charging | Adjusted some line spacings (to improve table in midde column) | 2019-12-29 | 11:37 |

Released | Easy | Cosmetic | AP Physics C EM | N1.3 | LR Increasing current | Adjusted some line spacings (to improve table in midde column) | 2019-12-29 | 11:40 |

Released | Easy | Cosmetic | AP Physics 1 | 5.2 | Not-necessarily-conservation laws | Added trailing whooshies/streaks to spring portions of "object 1" in all snapshots | 2019-12-29 | 11:55 |

Released | Copy | Cosmetic | AP Physics C Mech | 5.2 | Not-necessarily-conservation laws | Added trailing whooshies/streaks to spring portions of "object 1" in all snapshots | 2019-12-29 | 11:56 |

Released | Easy | Cosmetic | AP Physics C EM | M1.3 | Solenoids | Adjusted spacing above and below solenoid figures | 2019-12-29 | 19:24 |

Released | Easy | Cosmetic | AP Physics 2 | 13.1 | Magnetism | Biot-Savart figure 2nd panel: shift 2px up: rvector labels for horizontal rvectors | 2019-12-30 | 22:51 |

Released | Easy | Cosmetic | AP Physics C EM | M1.1 | Magnetism | Biot-Savart figure 2nd panel: shift 2px up: rvector labels for horizontal rvectors | 2019-12-30 | 22:53 |

Released | Easy | Cosmetic | AP Physics 1 | 5.0 | Newt 2 can be re-expressed | 3-panel two-object collision figure: Added whooshies to spring | 2019-12-30 | 23:05 |

Released | Copy | Cosmetic | AP Physics C Mech | 5.0 | Newt 2 can be re-expressed | 3-panel two-object collision figure: Added whooshies to spring | 2019-12-30 | 23:06 |

Released | Easy | Cosmetic | AP Physics 1 | 12.4 | Current | Both resistor figures: Changed current arrow capstyle from round to square | 2019-12-31 | 12:30 |

Released | Medium | Missing item | AP Physics C EM | E2.1.1 | Current | Both resistor figures: Changed current arrow capstyle from round to square, moved E-field label; 1st resistor figure: Added blue mor | 2019-12-31 | 13:12 |

Released | Easy | Cosmetic | AP Physics 2 | 7.5 | Fluid mechanics | Adopted uglier layering style of blue and black outlines near cylindrical morsels to be consistent with blue morsel in E2.1.1 | 2019-12-31 | 13:29 |

Released | Tedious | Cosmetic | AP Physics C EM | M1.1 | Magnetism with calculus | Small layering/dashed outline styling type edits, including making blue morsel layerings more consistent with E2.1.1 style | 2019-12-31 | 16:08 |

Released | Tedious | Cosmetic | AP Physics 2 | 13.1 | Magnetism | Small layering/dashed outline styling type edits, including making blue morsel layerings more consistent with E2.1.1 style | 2019-12-31 | 16:11 |

Released | SYNC | (Master folder) | 2019-12-31 | 16:13 | ||||

Released | Easy | Cosmetic | AP Physics 2 | 7.5 | Fluid mechanics | Failed draft: Continuity & Bernoulli: made horizontalish whooshies actually horizontal (they were ~0.01px tall); subsequent observati | 2020-01-01 | 15:04 |

Released | Easy | Cosmetic | AP Physics 1 | 2.2.3 | Resolve vector components using trig | Without triangles panel: Nudged one of the horizontal whooshies | 2020-01-01 | 15:29 |

Released | Copy | Cosmetic | AP Physics C Mech | 2.2.3 | Resolve vector components using trig | Without triangles panel: Nudged one of the horizontal whooshies | 2020-01-01 | 15:30 |

Released | Tedious | Missing item | AP Physics 1 | 12.4 | Current | Draft: Redid last page (electric power) more carefully deriving P = I Delta V by focusing on energy changes for small parcels of char | 2020-01-01 | 16:39 |

Released | Copy pg. 3 of 3 | Missing item | AP Physics C EM | E2.1.1 | Current | Draft: Redid last page (electric power) more carefully deriving P = I Delta V by focusing on energy changes for small parcels of char | 2020-01-01 | 16:42 |

Released | SYNC | (Master folder) | 2020-01-01 | 16:44 | ||||

Released | Easy | Cosmetic | AP Physics 1 | 12.4 | Current | Electric power situation: Moved plates of charge at left and right outward (so as not to sit on equipotential lines), added lattice of fain | 2020-01-01 | 22:22 |

Released | Copy figs | Cosmetic | AP Physics C EM | E2.1.1 | Current | Electric power situation: Moved plates of charge at left and right outward (so as not to sit on equipotential lines), added lattice of fain | 2020-01-01 | 22:24 |

Released | SYNC | (Master folder) | 2020-01-01 | 22:25 | ||||

Released | Easy | Missing item | AP Physics C Mech | 0.0 | AP Physics C Mechanics outline | SHM: Added listing for 2009 FRQ M2 | 2020-01-02 | 12:48 |

Released | Easy | Cosmetic | AP Physics 1 | 10.3 | SHM cribsheet | mass-spring FBD: Changed congruent hash cap style round->square; ideal pendulum: changed tension label T -> F_T | 2020-01-05 | 19:49 |

Released | Copy | Cosmetic | AP Physics C Mech | 10.3 | SHM cribsheet | mass-spring FBD: Changed congruent hash cap style round->square; ideal pendulum: changed tension label T -> F_T | 2020-01-05 | 19:50 |

Released | Copy fig | Cosmetic | AP Physics 1 | 10.2 | SHM UCM connection | mass-spring FBD: Changed congruent hash cap style round->square | 2020-01-05 | 19:51 |

Released | Copy | Cosmetic | AP Physics C Mech | 10.2 | SHM UCM connection | mass-spring FBD: Changed congruent hash cap style round->square | 2020-01-05 | 19:53 |

Released | Easy | Cosmetic | AP Physics 1 | 10.1 | SHM Graphs | Adjusted some whooshy lengths on comic strip snapshots | 2020-01-06 | 0:18 |

Released | Copy | Cosmetic | AP Physics C Mech | 10.1 | SHM Graphs | Adjusted some whooshy lengths on comic strip snapshots | 2020-01-06 | 0:20 |

Released | Medium | Cosmetic | AP Physics 1 | 10.5 | Resonance | Adjusted some whooshy lengths on comic strip snapshots | 2020-01-06 | 0:28 |

Released | Copy | Cosmetic | AP Physics C Mech | 10.5 | Resonance | Adjusted some whooshy lengths on comic strip snapshots | 2020-01-06 | 0:29 |

Released | SYNC | (Master folder) | 2020-01-06 | 0:31 | ||||

Released | Easy | Cosmetic | AP Physics 1 | 12.4 | Current | Current: I arrow end cap style round->square; KJR: I arrows end cap styles: round->square | 2020-01-06 | 12:17 |

Released | Medium | Cosmetic (and | AP Physics C EM | E2.1.1 | Current | Current: I arrow end cap style round->square, changed area notation to Avector with perpendicular arrow, edited J formula to read | 2020-01-06 | 12:27 |

Released | Easy | Cosmetic | AP Physics 1 | 8.x | (Multiple) | Renumbered handouts (both PDFs and source DOCXs): previous 8.4->now 8.3, previous 8.1.2->now 8.4 | 2020-01-06 | 14:14 |

Released | Easy | Cosmetic | AP Physics C Mech | 8.x | (Multiple) | Renumbered handouts (PDFs): previous 8.4->now 8.3, previous 8.1.2->now 8.4 | 2020-01-06 | 14:19 |

Released | SYNC | (Master folder) | 2020-01-06 | 14:21 | ||||

Released | Medium | Small missing i | AP Physics 2 | 15.4 | Reflections and thin-film interference | Draft: Reflection at boundary figures: Added very faint future just-reach-boundary snapshots (with gradient stroke opacity) and N3L | 2020-01-07 | 0:05 |

Released | Easy | Cosmetic | AP Physics 1 | 11.1 | Waves | Standing wave comic strip: 1st panel: relabled tension forces in F_T style instead of T style | 2020-01-07 | 0:09 |

Released | SYNC | (Master folder) | 2020-01-07 | 0:11 | ||||

Released | Tedious | Cosmetic | AP Calculus AB | 2.7 | Curve sketching | Redid layout for 14.875"x11", added case table for 1st derivative test | 2020-01-08 | 2:51 |

Released | Medium | Cosmetic | AP Physics C EM | E1.4 | Gauss's Law | Both figures restyled endcaps of some line segments round->square; did some nudging in electric flux figure | 2020-01-08 | 12:54 |

Released | Easy | Cosmetic | AP Physics C EM | E2.1.1 | Current | 1st figure (current, J): area vector line segment end caps: round end caps became square, small nudge/alignment | 2020-01-08 | 12:58 |

Released | Medium | Cosmetic | AP Physics C EM | E1.2 | Electric fields and potentials with calc | pg. 1 E/V definitions figure: A bunch of line endcap style edits round->square; for dashed distance measurements changed from 8 | 2020-01-08 | 13:10 |

Released | Copy fig | Cosmetic | AP Physics 2 | 12.3.2 | Electric fields and potentials | pg. 1 E/V definitions figure: A bunch of line endcap style edits round->square; for dashed distance measurements changed from 8 | 2020-01-08 | 13:13 |

Released | Easy | Error | AP Physics 1 | 8.4 | Accruing effects of varying torques | Angular impulse eqn.: Put sum_k around \Delta t in what was originally \tau_AVG \Delta t, reduced figure sizes | 2020-01-08 | 14:10 |

Released | Copy | Error | AP Physics C Mech | 8.4 | Accruing effects of varying torques | Angular impulse eqn.: Put sum_k around \Delta t in what was originally \tau_AVG \Delta t, reduced figure sizes | 2020-01-08 | 14:12 |

Released | SYNC | (Master folder) | 2020-01-08 | 14:13 | ||||

Released | Medium | Cosmetic | AP Physics C EM | E1.4 | Gauss's Law | Electric flux panels: Various slight re-alignment translations and rotations | 2020-01-08 | 23:00 |

Released | Medium | Cosmetic | AP Physics 2 | 14.1 | Electromagnetism | Magnetic flux panels: Various slight re-alignment translations and rotations | 2020-01-08 | 23:17 |

Released | Copy fig & | Cosmetic | AP Physics C EM | E1.4 | Gauss's Law | Electric flux panels: Inherit additional small re-alignments made for 14.1 | 2020-01-08 | 23:19 |

Released | Medium & | Cosmetic | AP Physics C EM | N1.1 | Electromagnetism | Copied magnetic flux panels figure, cosmetically edited magnetic flux potato figure (endcaps style: round->square, adjusted empty s | 2020-01-08 | 23:37 |

Released | Easy | Cosmetic | AP Physics 1 | 5.3 | Parallels momentum energy (APP1) | Reformatted x- and y-impulse as signed area under Fx vs. t and Fy vs. t graph equations | 2020-01-09 | 17:55 |

Released | Easy | Cosmetic | AP Calculus AB | 2.7 | Curve sketching | On sign charts removed parentheses surrounding + and - symbols | 2020-01-10 | 1:55 |

Released | Easy | Cosmetic | AP Physics C Mech | 7.2.4 | Inverse-square fields have inverse-r p | Electric potential figure: Changed q_{SRC} to q | 2020-01-10 | 2:04 |

Released | Copy | Cosmetic | AP Physics C EM | E1.2.2 | Inverse-square fields have inverse-r p | Electric potential figure: Changed q_{SRC} to q | 2020-01-10 | 2:06 |

Released | Easy | Cosmetic | AP Physics 1 | 5.2 | Not-necessarily-constant sums | Changed filename | 2020-01-10 | 14:08 |

Released | Copy | Cosmetic | AP Physics C Mech | 5.2 | Not-necessarily-constant sums | Changed filename | 2020-01-10 | 14:09 |

Released | Easy | Cosmetic | AP Physics 1 | 8.5 | Rotational not-necessarily-constant s | Changed filename | 2020-01-10 | 14:10 |

Released | Copy | Cosmetic | AP Physics C Mech | 8.5 | Rotational not-necessarily-constant s | Changed filename | 2020-01-10 | 14:11 |

Released | Medium | Small missing i | AP Calculus AB | 2.7 | Curve sketching | Added "Sign" and "Behav. of" labels on sign charts, vertically stretched layout of sign charts diagram | 2020-01-10 | 23:15 |

Released | Medium | Small missing i | AP Calculus AB | 2.6 | Derivative tests | Added conditions/sentences in terms of f' for concavity, added note for Stewart poi definition that there is implied continuity | 2020-01-10 | 23:38 |

Released | Medium | Missing item | AP Physics 1 | 5.2 | Not-necessarily-constant sums | Draft: Added vector arrow representation of impulse-momentum theorem | 2020-01-11 | 0:22 |

Released | Copy | Missing item | AP Physics C Mech | 5.2 | Not-necessarily-constant sums | Draft: Added vector arrow representation of impulse-momentum theorem | 2020-01-11 | 0:23 |

Released | SYNC | (Master folder) | 2020-01-11 | 0:25 | ||||

Released | Easy | Cosmetic | AP Physics 1 | 5.2 | Not-necessarily-constant sums | Nudged p_2,i = 0 vector label right | 2020-01-11 | 0:32 |

Released | Copy | Cosmetic | AP Physics C Mech | 5.2 | Not-necessarily-constant sums | Nudged p_2,i = 0 vector label right | 2020-01-11 | 0:33 |

Released | Easy | Small missing i | AP Physics 2 | 12.8 | Capacitors | Made compatible with APPCEM: Added integral for energy stored, drew up arrow Delta V Riemann sum box | 2020-01-11 | 13:31 |

Released | Copy | Small missing i | AP Physics C EM | E1.5 | Capacitors | Made compatible with APPCEM: Added integral for energy stored, drew up arrow Delta V Riemann sum box | 2020-01-11 | 13:33 |

Released | Medium | Small missing i | AP Physics 1 | 5.1 | Impulse delivered by a force | Made compatible with APPCM: Added integral for x-impulse, added t_i and t_f to figure, highlighted F_x,k (3rd Riemann sum box) r | 2020-01-11 | 14:16 |

Released | Copy | Small missing i | AP Physics C Mech | 5.1 | Impulse delivered by a force | Made compatible with APPCM: Added integral for x-impulse, added t_i and t_f to figure, highlighted F_x,k (3rd Riemann sum box) r | 2020-01-11 | 14:17 |

Released | Easy | Small missing i | AP Physics 1 | 7.1 | Work done by a force | Made compatible with APPCM: Added integral for work done by varying force, added \ell_i and \ell_f to figure, highlighted F_\paralle | 2020-01-11 | 14:21 |

Released | Copy | Small missing i | AP Physics C Mech | 7.1 | Work done by a force | Made compatible with APPCM: Added integral for work done by varying force, added \ell_i and \ell_f to figure, highlighted F_\paralle | 2020-01-11 | 14:23 |

Released | Copy figs, Easy | Small missing i | AP Physics 1 | 8.4 | Accruing effects of varying torques | Made compatible with APPCM: Added integrals, updated all figures based on immediately preceding edits | 2020-01-11 | 14:29 |

Released | Copy | Small missing i | AP Physics C Mech | 8.4 | Accruing effects of varying torques | Made compatible with APPCM: Added integrals, updated all figures based on immediately preceding edits | 2020-01-11 | 14:30 |

Released | Medium | Small missing i | AP Physics C Mech | 7.1.2 | Work done along a path (APPC) | Stylistic changes to area-under curve figure (added \ell_i, \ell_f labels, vertical up arrow to indicate parallel component of force for Riemann sum box | 2020-01-11 | 15:01 |

Released | Medium | Small missing i | AP Physics 2 | 18.1 | Thermo first law | PV work figure: added tickmark labels for initial, final pressures and volumes, added vertical up arrow for pressure for Riemann sum | 2020-01-11 | 15:20 |

Released | Easy | Cosmetic | AP Physics C Mech | 7.1.2 | Work done along a path (APPC) | Area-under-curve figure: Adjusted line widths and gradient boundary locations (emphasized Riemann sum box should have 2 pt lin | 2020-01-11 | 15:27 |

Released | Easy | Cosmetic | AP Physics 2 | 12.8 | Capacitors | Area-under-curve figure: Recentered bright portion of gradient, adjusted line widths and right gradient boundary location (emphasiz | 2020-01-11 | 15:34 |

Released | Copy | Cosmetic | AP Physics C EM | E1.5 | Capacitors | Area-under-curve figure: Recentered bright portion of gradient, adjusted line widths and right gradient boundary location (emphasiz | 2020-01-11 | 15:36 |

Released | Easy | Error | AP Physics 2 | 17.3 | Subatomic physics | p. 2: "(Non) conservation laws"->"Conservation laws", changed style of subscripts EXT ON SYS to EXT->SYS | 2020-01-13 | 11:36 |

Released | Easy | Cosmetic | AP Physics 1 | 12.1 | Electric charge and force | Charge conservation: changed subscript style on DeltaQ term, Electric charge (added faint gray "electric" before "charge" in body te | 2020-01-13 | 11:44 |

Released | Copy | Cosmetic | AP Physics C EM | E1.1 | Electric charge and force | Charge conservation: changed subscript style on DeltaQ term, Electric charge (added faint gray "electric" before "charge" in body te | 2020-01-13 | 11:46 |

Released | Easy | Cosmetic | AP Calculus AB | 1.3 | Calculating limits | p. 2 Trig limits: Changed dashed line style from 2pt dash, 8pt gap, round end caps to 5pt dash, 5pt gap, square end caps | 2020-01-14 | 11:52 |

Released | Tedious | Error | AP Calculus AB | 2.3 | l'Hospital's rule | Expanded discussion in artificial motivating example to get to conclusion that looks like strong form of l'H, added explicit hypothesis- | 2020-01-15 | 1:40 |

Released | SYNC | (Master folder) | 2020-01-15 | 1:46 | ||||

Released | Easy | Cosmetic | AP Calculus AB | 2.3 | l'Hospital's rule | Changed the first set of purple labels (Eqs. 3.1) to emoji of zany face | 2020-01-15 | 2:24 |

Released | Tedious | Missing item | Make and solve phys | T.1.2 | Experimental design | Draft: Giant chart for solving experimental design and analysis problems | 2020-01-16 | 14:31 |

Released | Easy | Cosmetic error | Make and solve phys | T1.2 | Experimental design | Opened artboard downward (to prevent chopping off bottom of poster), rephrased title, added DAVIDLIAO.COM near title, mention | 2020-01-17 | 14:04 |

Released | Easy | Cosmetic | AP Physics 1 | 7.1 | Work done by a force | Fparallel-ell graph: Fixed line widths (2 pt for emphasized Riemann sum rect, 1.5 else), moved gradient shading vertical boundaries; | 2020-01-17 | 14:29 |

Released | Copy | Cosmetic | AP Physics C Mech | 7.1 | Work done by a force | Fparallel-ell graph: Fixed line widths (2 pt for emphasized Riemann sum rect, 1.5 else), moved gradient shading vertical boundaries; | 2020-01-17 | 14:31 |

Released | Easy | Cosmetic | AP Calculus AB | 3.1 | Definite integrals and area | Re-expressed definite integral definition with n->infty rather than Deltax->0; moved integral boundary locations vertically outward, adj | 2020-01-17 | 18:30 |

Released | Easy | Cosmetic | AP Calculus BC | 3.8 | Improper integrals | Re-expressed definite integral definition with n->infty rather than Deltax->0, changed N to n | 2020-01-17 | 18:31 |

Released | Easy | Cosmetic | AP Calculus AB | 3.2 | RAM | Moved integral boundary locations vertically outward; adjusted line spacing to keep handout to single page, changed N to n | 2020-01-17 | 18:37 |

Released | Easy | Cosmetic | AP Calculus AB | 3.2.2 | TAM | Moved integral boundary locations vertically outward; adjusted line spacing to make handout spacing consistent with 3.2, changed | 2020-01-17 | 18:38 |

Released | Easy | Error | AP Calculus AB | 3.2 | RAM | Column subtitle for "Subinterval" renamed from n to i | 2020-01-17 | 18:44 |

Released | Easy | Error | AP Calculus AB | 3.2.2 | TAM | Column subtitle for "Subinterval" renamed from n to i | 2020-01-17 | 18:45 |

Released | Easy | Cosmetic | AP Calculus AB | 3.2.3 | TAM | Renumbered 3.2.2->3.2.3 | 2020-01-17 | 19:18 |

Released | Easy | Cosmetic | AP Calculus AB | 3.2.4 | Integration table | Renumbered 3.2.3->3.2.4 | 2020-01-17 | 19:18 |

Released | Medium | Missing item | AP Calculus AB | 3.2.2 | Matching definite integrals with limits | Created draft | 2020-01-17 | 19:20 |

Released | Easy | Cosmetic | AP Calculus AB | 3.2.1 | RAM | Renumbered 3.2->3.2.1 | 2020-01-17 | 19:21 |

Released | Medium | Missing item | AP Calculus AB | 2.6 | Derivative tests | pg. 1: Added parenthetic light-gray "(strictly)" to names for increasing and decreasing; p.o.i. pg: Added table column headers (Hypo | 2020-01-18 | 12:47 |

Released | SYNC | (Master folder) | 2020-01-18 | 12:49 | ||||

Released | Easy | Cosmetic | AP Calculus AB | 2.6 | Derivative tests | pg. 1: Removed parenthetic light-gray "(strictly)" from names for increasing and decreasing | 2020-01-18 | 12:53 |

Released | Easy | Cosmetic | AP Calculus AB | 2.6 | Derivative tests | Concavity pg.: Grammatical/word-choice/formatting-level edits to inline footnotes referring to Larson, Finney, and Hass textbooks | 2020-01-18 | 12:57 |

Released | Easy | Cosmetic | AP Physics 1 | 5.1 | Impulse delivered by a force | Fx-t graph: Fixed line widths (2 pt for emphasized Riemann sum rect, 1.5 else), moved gradient shading vertical boundaries | 2020-01-19 | 20:19 |

Released | Copy | Cosmetic | AP Physics C Mech | 5.1 | Impulse delivered by a force | Fx-t graph: Fixed line widths (2 pt for emphasized Riemann sum rect, 1.5 else), moved gradient shading vertical boundaries | 2020-01-19 | 20:20 |

Released | Easy | Cosmetic | AP Physics 1 | 8.4 | Accruing effects of varying torques | Graphs: fixed line widths (2 pt for emphasized Riemann sum rect, 1.5 else), moved gradient shading vertical boundaries | 2020-01-19 | 20:26 |

Released | Copy | Cosmetic | AP Physics C Mech | 8.4 | Accruing effects of varying torques | Graphs: fixed line widths (2 pt for emphasized Riemann sum rect, 1.5 else), moved gradient shading vertical boundaries | 2020-01-19 | 20:28 |

Released | Easy | Cosmetic | AP Physics 1 | 7.2.1 | Potential energy | GPE: Added mass m label to box, added down arrow to first down segment of path II, added "1 m" scale bar; Draft: pg. 2: Reworde | 2020-01-19 | 20:54 |

Released | Copy | Cosmetic | AP Physics C Mech | 7.2.1 | Potential energy | GPE: Added mass m label to box, added down arrow to first down segment of path II, added "1 m" scale bar; Draft: pg. 2: Reworde | 2020-01-19 | 20:57 |

Released | Easy | Cosmetic | AP Physics C Mech | 7.5 | Types of collisions | Renumbered old 7.4->new 7.5 | 2020-01-19 | 22:16 |

Released | Easy | Cosmetic | AP Physics 1 | 7.5 | Types of collisions | Renumbered old 7.4->new 7.5 | 2020-01-19 | 22:17 |

Released | Easy | Cosmetic | AP Physics 1 | 7.4 | SiQuENC Work-energy | Renumbered old 7.3->new 7.4 | 2020-01-19 | 22:18 |

Released | Tedious | Missing item | AP Physics 1 | 7.3 | Internal energy | Created draft | 2020-01-19 | 22:37 |

Released | Copy | Missing item | AP Physics C Mech | 7.3 | Internal energy | Created draft | 2020-01-19 | 22:38 |

Released | Easy | Cosmetic | AP Physics 2 | 18.1 | Thermo first law | Heating methods lattice vibrations insets: Nudged upper rows up and lower rows down to make crystal lattice look more isotropic | 2020-01-19 | 22:46 |

Released | Easy | Cosmetic | AP Calculus AB | 1.1 | Limit definitions | The quotations marks surrounding the equals signs for the infinite limits: made fainter (gray) | 2020-01-19 | 22:50 |

Released | Easy | Cosmetic | AP Calculus AB | 2.7 | Curve sketching | Increased spacing (added third-font-size space) between "of" and Italic "f" in figure | 2020-01-19 | 22:57 |

Released | Medium | Cosmetic | AP Physics 2 | 18.1 | Thermo first law | Changed subscripts from Delta Q_{INTO SYS} and Delta W_{ON SYS} to Delta Q_{SURR->SYS} and Delta W_{SURR->SYS} | 2020-01-19 | 23:13 |

Released | Easy | Cosmetic | AP Physics 2 | 18.2 | Thermo second law | pg. 1: Delta Q_REV,INTO SYS replaced with Delta Q_REV,SURR->SYS; pg. 3: replaced INTO and ON prepositions in subscripts | 2020-01-19 | 23:22 |

Released | Medium | Cosmetic | SAT Physics | 5.2.1 | Heating curve | Changed graph from collection of segments to joined path, changed endcap style from round to square, added origin to graph, add | 2020-01-19 | 23:44 |

Released | Easy | Cosmetic | AP Physics C Mech | 7.4 | SiQuENC Work-energy | Renumbered old 7.3->new 7.4 | 2020-01-19 | 22/16 |

Released | Medium | Cosmetic | SAT Physics | 18.3 | Heat engines | Changed subscript prepositions "ON" and "INTO" to arrows in text and figures, a bunch of resizing/nudging to make everything fit o | 2020-01-20 | 0:31 |

Released | SYNC | (Master folder) | 2020-01-20 | 0:34 | ||||

Released | Easy | Missing item | Make and solve phys | T.1.2 | Experimental design | Added warning blurb about MC trap where proposed procedure specifies changing variable that shouldn't be changed; did some n | 2020-01-21 | 14:31 |

Released | Easy | Cosmetic | AP Calculus BC | 3.8 | Improper integrals | Vertical asymptote in interior: Adjusted blue and pink gradients in right half of graph | 2020-01-21 | 15:47 |

Released | Easy | Cosmetic | AP Calculus BC | 3.8 | Improper integrals | Horizontal shift of main part of graph for vertical asymptote concept figure, vertical asymptote right boundary figure, vertical asympto | 2020-01-21 | 16:06 |

Released | Medium | Cosmetic | AP Calculus BC | 3.8 | Improper integrals | pg. 1: Concept of issues with old definition of integral: both figures: Added arrows to indicate Delta x and f(x_[something]^*) | 2020-01-21 | 22:54 |

Released | Tedious | Small missing i | AP Physics 1 | 7.3 | Internal energy | Centered Earth with ball, redid dashed bubble enclosing ball and Earth, added lots of stroboscopic faint images for springs, fixed to | 2020-01-22 | 2:25 |

Released | Copy | Small missing i | AP Physics C Mech | 7.3 | Internal energy | Centered Earth with ball, redid dashed bubble enclosing ball and Earth, added lots of stroboscopic faint images for springs, fixed to | 2020-01-22 | 2:27 |

Released | Easy | Cosmetic | AP Physics 2 | 18.2 | Thermo second law | Unavailability of energy to do work: adjusted some vertical spacings between vectors and labels (v, one of the Delta x) | 2020-01-22 | 2:31 |

Released | SYNC | (Master folder) | 2020-01-22 | 2:33 | ||||

Released | Medium | Cosmetic | AP Physics 1 | 7.3 | Internal energy | Added stroboscopic copies (with some whooshies) for "zoom-in-box-&-rays", adjusted shape of bottom (2?) whooshies on peak-of- | 2020-01-22 | 12:20 |

Released | Copy | Cosmetic | AP Physics C Mech | 7.3 | Internal energy | Added stroboscopic copies (with some whooshies) for "zoom-in-box-&-rays", adjusted shape of bottom (2?) whooshies on peak-of- | 2020-01-22 | 12:21 |

Released | Easy | Cosmetic | AP Physics 1 | 3.6 | Free-fall & projectile motion | Both panels: Peak-of-flight snapshot: Replaced bottom 2 whooshies with bottom 2 whooshies from edits to 7.3 | 2020-01-22 | 12:28 |

Released | Copy | Cosmetic | AP Physics C Mech | 3.6 | Free-fall & projectile motion | Both panels: Peak-of-flight snapshot: Replaced bottom 2 whooshies with bottom 2 whooshies from edits to 7.3 | 2020-01-22 | 12:30 |

Released | Easy | Cosmetic | AP Physics 1 | 4.5 | Gravitation | Changed labels L and R to 1 and 2, cheated spacing on + and = surrounding Delta W_HANDS in energy bar chart | 2020-01-23 | 0:12 |

Released | Copy | Cosmetic | AP Physics C Mech | 4.5 | Gravitation | Changed labels L and R to 1 and 2, cheated spacing on + and = surrounding Delta W_HANDS in energy bar chart | 2020-01-23 | 0:14 |

Released | SYNC | (Master folder) | 2020-01-23 | 0:16 | ||||

Released | Easy | Cosmetic | AP Physics 1 | 7.3 | Internal energy | Added light blue dashed arrows showing correspondences between energy differences with microscopic view and U_INT for macr | 2020-01-23 | 1:28 |

Released | Copy | Cosmetic | AP Physics C Mech | 7.3 | Internal energy | Added light blue dashed arrows showing correspondences between energy differences with microscopic view and U_INT for macr | 2020-01-23 | 1:29 |

Released | Easy | Cosmetic | AP Physics 1 | 3.6 | Free-fall & projectile motion | Replaced -j unit vector with u_DOWN | 2020-01-23 | 1:32 |

Released | Copy | Cosmetic | AP Physics C Mech | 3.6 | Free-fall & projectile motion | Replaced -j unit vector with u_DOWN | 2020-01-23 | 1:33 |

Released | Easy | Cosmetic | AP Physics 1 | 7.3 | Internal energy | Reworded sentence about bookkeeping energy so that sentence would not have an orphan word | 2020-01-23 | 1:34 |

Released | Copy | Cosmetic | AP Physics C Mech | 7.3 | Internal energy | Reworded sentence about bookkeeping energy so that sentence would not have an orphan word | 2020-01-23 | 1:36 |

Released | Easy | Missing item | Make and solve phys | T1.2 | Experimental design | Added illustration of error bars to first section on uncertainty | 2020-01-23 | 1:46 |

Released | Tedious | Missing item | AP Physics 1 | 7.2.1 | Potential energy | Draft: Added 1st page showing potential energy as a store receiving work (push apart Earth and spacecraft) | 2020-01-23 | 17:12 |

Released | Copy | Missing item | AP Physics C Mech | 7.2.1 | Potential energy | Draft: Added 1st page showing potential energy as a store receiving work (push apart Earth and spacecraft) | 2020-01-23 | 17:14 |

Released | SYNC | (Master folder) | 2020-01-23 | 17:17 | ||||

Released | Easy | Cosmetic | AP Physics 1 | 7.2.1 | Potential energy | pg. 1: Renamed HL and HR H1 and H2, respectively, in figure and text, added barely visible bars for K_S,I and K_S,f, changed bar | 2020-01-23 | 21:20 |

Released | Copy | Cosmetic | AP Physics C Mech | 7.2.1 | Potential energy | pg. 1: Renamed HL and HR H1 and H2, respectively, in figure and text, added barely visible bars for K_S,I and K_S,f, changed bar | 2020-01-23 | 21:22 |

Released | Easy | Cosmetic | AP Physics 1 | 7.2.1 | Potential energy | Changed derivation for pg. 1 to start from W-E theorem for E and S individually, changed an "is" near bottom to "was" | 2020-01-24 | 23:22 |

Released | Copy | Cosmetic | AP Physics C Mech | 7.2.1 | Potential energy | Changed derivation for pg. 1 to start from W-E theorem for E and S individually, changed an "is" near bottom to "was" | 2020-01-24 | 23:23 |

Released | Easy | Small missing i | AP Physics 1 | 7.1 | Work done by a force | pg. 1: Added light gray formula for instantaneous power for AP Physics C | 2020-01-25 | 0:15 |

Released | Copy | Small missing i | AP Physics C Mech | 7.1 | Work done by a force | pg. 1: Added light gray formula for instantaneous power for AP Physics C | 2020-01-25 | 0:17 |

Released | SYNC | (Master folder) | 2020-01-25 | 0:18 | ||||

Released | Easy | Small missing i | AP Calculus AB | 3.2.1 | RAM | Added columns for left and right edges of subintervals, removed sentence near bottom to keep handout to single page, cleaned up | 2020-01-26 | 1:49 |

Released | Easy | Cosmetic | AP Calculus AB | 3.2.3 | TAM | Made style more consistent with 3.2.1 RAM (non-Italicized superscript L and R), cleared out table main cells, added note about TA | 2020-01-26 | 1:53 |

Released | Medium | Missing item | AP Calculus BC | 4.5 | Parametric | Added integrals to vector kinematics section, added another tangent segment to main y vs. x figure so can talk about y'' | 2020-01-26 | 2:20 |

Released | Easy | Cosmetic | AP Calculus BC | 4.5 | Parametric | Re-expressed integration relationships using definite integrals and bounds | 2020-01-26 | 2:41 |

Released | SYNC | (Master folder) | 2020-01-26 | 2:43 | ||||

Released | Easy | Cosmetic | AP Physics 1 | 4.5 | Gravitation | Centered congruent hash marks on forces | 2020-01-27 | 1:19 |

Released | Copy | Cosmetic | AP Physics C Mech | 4.5 | Gravitation | Centered congruent hash marks on forces | 2020-01-27 | 1:20 |

Released | Easy | Cosmetic | AP Physics 1 | 4.5 | Gravitation | Changed mind: Shifted congruent hash marks on forces | 2020-01-27 | 1:35 |

Released | Copy | Cosmetic | AP Physics C Mech | 4.5 | Gravitation | Changed mind: Shifted congruent hash marks on forces | 2020-01-27 | 1:36 |

Released | Medium | Cosmetic | AP Physics 1 | 7.2.1 | Potential energy | pg. 1: Ug Push apart Earth & spacecraft: distinguished congruent hashes among rows, pg. 2: Us: removed box, removed horizonta | 2020-01-27 | 2:24 |

Released | Copy | Cosmetic | AP Physics C Mech | 7.2.1 | Potential energy | pg. 1: Ug Push apart Earth & spacecraft: distinguished congruent hashes among rows, pg. 2: Us: removed box, removed horizonta | 2020-01-27 | 2:26 |

Released | SYNC | (Master folder) | 2020-01-27 | 2:28 | ||||

Released | Easy | Cosmetic | AP Calculus AB | 3.2.2 | Matching definite integrals with limits | Changed instructions for getting limit of Riemann sum to mention "n" and to include explicit construction of a row dedicated just to "i | 2020-01-27 | 15:59 |

Released | Tedious | Missing item | AP Physics 1 | 7.2.1 | Potential energy | Added lots more details to Us figure labeling small force diagrams so can actually talk about Us, changed notation in text too | 2020-01-27 | 16:56 |

Released | Copy | Missing item | AP Physics C Mech | 7.2.1 | Potential energy | Added lots more details to Us figure labeling small force diagrams so can actually talk about Us, changed notation in text too | 2020-01-27 | 16:57 |

Released | SYNC | (Master folder) | 2020-01-27 | 16:59 | ||||

Released | Easy | Cosmetic | AP Calculus AB | 2.6 | Derivative tests | pp. 1 & 3: Added 1pt line spacing above & below table column header for sufficient conditions | 2020-01-29 | 12:28 |

Released | Medium | Missing item | AP Calculus AB | 4.2 | Using integrals for areas | Average value figure: Added Riemann sum boxes, Average value text: Added equation showing motivation for definition of fAVG | 2020-01-29 | 19:13 |

Released | Easy | Small error | AP Calculus AB | 3.1 | Definite integrals and area | Figure for limit of Riemann sum: Last figure's f(xi* was missing *, fixed | 2020-01-29 | 19:16 |

Released | Easy | Cosmetic | AP Calculus AB | 4.2 | Using integrals for areas | Minor line spacing tweaks near bottom of top panel text | 2020-01-29 | 19:20 |

Released | SYNC | (Master folder) | 2020-01-29 | 19:22 | ||||

Released | Easy | Cosmetic | AP Calculus AB | 4.2 | Using integrals for areas | Top panel: Split text/eqtns into 2 columns, tweaked line spacing in bottom panel; full table: tweaked horizontal positions of column d | 2020-01-29 | 20:19 |

Released | Easy | Small error | Make and solve phys | T.1.2 | Experimental design | Removed warning at bottom of poster about "don't say prove" (there are some types of not-very-mechanistic claims that can be sho | 2020-01-31 | 17:52 |

Released | Easy | Missing items | AP Physics 1 | 7.1 | Work done by a force | Added AVG subscripts in work formula (e.g. F_parallel,AVG), broke off sum W_F = W_sum F idea into separate block of text/eqtn | 2020-01-31 | 18:11 |

Released | Copy | Missing items | AP Physics C Mech | 7.1 | Work done by a force | Added AVG subscripts in work formula (e.g. F_parallel,AVG), broke off sum W_F = W_sum F idea into separate block of text/eqtn | 2020-01-31 | 18:12 |

Released | Tedious | Missing items | AP Physics 1 | 7.2.1 | Potential energy | Spring potential energy: change index i to index j; add normal forces to spring picture (otherwise create appearance of unbalanced f | 2020-01-31 | 19:40 |

Released | Copy | Missing items | AP Physics C Mech | 7.2.1 | Potential energy | Spring potential energy: change index i to index j; add normal forces to spring picture (otherwise create appearance of unbalanced f | 2020-01-31 | 19:42 |

Released | SYNC | (Master folder) | 2020-01-31 | 19:43 | ||||

Released | Easy | Cosmetic | AP Physics 1 | 7.2.1 | Potential energy | Spring potential energy: Added hand to final picture | 2020-02-01 | 0:05 |

Released | Copy | Cosmetic | AP Physics C Mech | 7.2.1 | Potential energy | Spring potential energy: Added hand to final picture | 2020-02-01 | 0:07 |

Released | Medium | Small missing i | AP Physics 2 | 13.1 | Magnetism | Draft: Added derivation of force on small current element formula; added some quantities (35% opacity) to small current element for | 2020-02-01 | 0:44 |

Released | Copy fig parts | Small missing i | AP Physics C EM | M1.1 | Magnetism with calculus | Draft: Added derivation of force on small current element formula; added some quantities (35% opacity) to small current element for | 2020-02-01 | 0:46 |

Released | Tedious | Innovation | AP Physics 1 | 12.4 | Current | Traffic "vehicles" representation of current added to or replacing arrow current representations for intro current, KJR, R combos | 2020-02-01 | 1:50 |

Released | Copy figs (and one fig part) | Innovation | AP Physics C EM | E2.1.1 | Current | Traffic "vehicles" representation of current added to or replacing arrow current representations for intro current, KJR, R combos | 2020-02-01 | 1:52 |

Released | Easy | Cosmetic | AP Physics 2 | 13.1 | Magnetism | Velocity vector: End cap round->square, nudged v vector label | 2020-02-01 | 2:00 |

Released | Easy | Cosmetic | AP Physics C EM | M1.1 | Magnetism with calculus | Velocity vector: End cap round->square, nudged v vector label | 2020-02-01 | 2:02 |

Released | SYNC | (Master folder) | 2020-02-01 | 2:04 | ||||

Released | Easy | Cosmetic | AP Physics C Mech | 6.2 | Mass-averaging over continuous mas | 2-d potato: Added directional arrows for dx and dy, integral equation underneath for xcom: added lower boundary "FORM" | 2020-02-05 | 23:59 |

Released | Easy | Cosmetic | AP Physics 1 | 11.2 | Speed of wave on string | Draft: Added FBD dots to FBDs (small size to not overwhelm spheres) | 2020-02-06 | 0:15 |

Released | Medium | Cosmetic | AP Physics 1 | 12.5 | DC (equilibrated) operation | Draft: Switched current representation style to match updated 12.4 and E2.1.1 (traffic "vehicles" style); added some missing "I" label | 2020-02-06 | 0:55 |

Released | Copy | Cosmetic | AP Physics C EM | E2.1.2 | DC (equilibrated) operation | Draft: Switched current representation style to match updated 12.4 and E2.1.1 (traffic "vehicles" style); added some missing "I" label | 2020-02-06 | 0:57 |

Released | SYNC | (Master folder) | 2020-02-06 | 0:58 | ||||

Released | Tedious | Missing item | AP Physics 1 | 8.0.1 | Rotational statics (APP1) | Created draft to introduce torque formula for classes that do rotational statics before introducing N2L for rotation | 2020-02-06 | 12:17 |

Released | Easy | Cosmetic | AP Physics 1 | 6.1 | Center of mass cribsheet | Fixed line spacing underneath first equation on pg. 2 | 2020-02-06 | 17:35 |

Released | Copy | Cosmetic | AP Physics C Mech | 6.1 | Center of mass cribsheet | Fixed line spacing underneath first equation on pg. 2 | 2020-02-06 | 17:36 |

Released | Easy | Cosmetic | AP Physics 1 | 8.0.1 | Rotational statics (APP1) | Removed extra space before closing parenthesis in title, restyled pivot using bigger pivot (from ideal pendulum figure) with firm supp | 2020-02-06 | 17:49 |

Released | Easy | Cosmetic | AP Physics 1 | 8.2 | Torque and rotational inertia | Adjusted line spacing for torque formula-pair's first appearance (pg. 2) for consistency with pg. 4 | 2020-02-06 | 17:52 |

Released | Copy | Cosmetic | AP Physics C Mech | 8.2 | Torque and rotational inertia | Adjusted line spacing for torque formula-pair's first appearance (pg. 2) for consistency with pg. 4 | 2020-02-06 | 17:53 |

Released | Easy | Cosmetic | AP Physics 1 | 8.2 | Torque and rotational inertia | Fixed line spacing error at top of pg. 3 (removed extra line before text) | 2020-02-06 | 17:54 |

Released | Copy | Cosmetic | AP Physics C Mech | 8.2 | Torque and rotational inertia | Fixed line spacing error at top of pg. 3 (removed extra line before text) | 2020-02-06 | 17:56 |

Released | Easy | Cosmetic | AP Physics 1 | 8.0.1 | Rotational statics (APP1) | Adjusted line spacing for torque formula pair (to be consistent with edit made for 8.2) | 2020-02-06 | 17:57 |

Released | SYNC | (Master folder) | 2020-02-06 | 17:59 | ||||

Released | Easy | Technical erro | AP Calculus BC | 4.5 | Parametric | Integral formula rewrote y(x) as y(t(x)) to avoid abuse of notation, added sentence about derivative and integral relationships having | 2020-02-08 | 1:51 |

Released | Easy | Cosmetic | Make and solve phys | T.1.2 | Experimental design | Adjusted some horizontal alignment of y = f(x) and table in Linearization panel | 2020-02-08 | 2:06 |

Released | Tedious | Missing item | Make and solve phys | T.0.3 | Writing arguments for FRQs | Created (days ago, but now copied into handouts folder): Species of argument structures (loosely like having species of counterpoi | 2020-02-08 | 16:19 |

Released | Medium | Missing item | AP Physics 1 | 8.0.2 | SiQuENC Rotational equilibrium (APP | Created draft: (for classes that cover rotational equilibrium before covering N2L for rotation) | 2020-02-08 | 17:31 |

Released | Easy | Cosmetic | Make and solve phys | T.1.2 | Experimental design | Some nudging of vertical alignment near bottom | 2020-02-08 | 23:13 |

Released | Easy | Cosmetic | AP Phyiscs 1 | 8.0.2 | SiQuENC Rotational equilibrium (APP | Grammar: "Write conditions" instead of "Write condition" | 2020-02-09 | 22:35 |

Released | Easy | Cosmetic | Make and solve phys | T.0.3 | Writing arguments for FRQs | 1st species example: Refer to y-axis instead of x-axis, add subscripts to distinguish inertial and gravitational mass; 4th species exam | 2020-02-10 | 11:37 |

Released | SYNC | (Master folder) | 2020-02-10 | 11:39 | ||||

Released | Easy | Cosmetic | AP Physics 1 | 8.1 | Rotational kinematics and dynamics c | Adjusted line spacing for torque definitions | 2020-02-10 | 12:50 |

Released | Easy | Cosmetic | AP Physics C Mech | 8.1 | Rotational kinematics and dynamics c | Adjusted line spacing for torque definitions and changed subscript content/style for rotational impulse sum (EXT->SYS) | 2020-02-10 | 12:56 |

Released | Easy | Cosmetic | AP Physics 1 | 8.5 | Rotational not-necessarily-constant s | Changed subscript on angular impulse torque sum from EXT ON SYS to EXT->SYS | 2020-02-15 | 15:31 |

Released | Copy | Cosmetic | AP Physics C Mech | 8.5 | Rotational not-necessarily-constant s | Changed subscript on angular impulse torque sum from EXT ON SYS to EXT->SYS | 2020-02-15 | 15:32 |

Released | Easy | Cosmetic | AP Physics 1 | 8.4 | Accruing effects of varying torques | Increased line spacing from 6 pt to 8 pt after titles | 2020-02-15 | 15:34 |

Released | Copy | Cosmetic | AP Physics C Mech | 8.4 | Accruing effects of varying torques | Increased line spacing from 6 pt to 8 pt after titles | 2020-02-15 | 15:35 |

Released | Easy | Cosmetic | AP Physics 1 | 8.1 | Rotational kinematics and dynamics c | In angular impuilse term, changed summation subscript from EXT ON SYS to EXT->SYS | 2020-02-15 | 15:36 |

Released | Medium | Cosmetic error | AP Physics 1 | 8.2 | Torque and rotational inertia | Rotational inertia panel for increased radius: Fixed alignment error for position of the mini person on the stick | 2020-02-15 | 15:51 |

Released | Copy | Cosmetic error | AP Physics C Mech | 8.2 | Torque and rotational inertia | Rotational inertia panel for increased radius: Fixed alignment error for position of the mini person on the stick | 2020-02-15 | 15:52 |

Released | SYNC | (Master folder) | 2020-02-15 | 15:54 | ||||

Released | Medium | Errors | AP Calculus BC | 5.1 | Series, tests, and remainders | Draft: Pp. 1-4 fixed a bunch of partial sum expressions that were from n = 1 to infty but should have been from i = 1 to n (with index | 2020-02-17 | 1:04 |

Released | Easy | Cosmetic | AP Calculus AB | 1.1 | Limit definitions | Pg. 1: Infinite limits: Adjusted spacings for the string "=" +infty | 2020-02-17 | 1:05 |

Released | Easy | Cosmetic | AP Calculus AB | 2.3 | l'Hospital's rule | Adjusted some spacings and alignments related to \pm type symbols in front of infties (two of the \pm needed to be lifted to the num | 2020-02-17 | 1:08 |

Released | SYNC | (Master folder) | 2020-02-17 | 1:10 | ||||

Released | Medium | Cosmetic | AP Calculus BC | 5.1 | Series, tests, and remainders | Taylor of ln(x) figure: adjusted layering/opacity, smoothed ln curve, added interval restriction to overlaid equation textbox | 2020-02-22 | 0:42 |

Released | Easy | Cosmetic | AP Calculus BC | 5.2 | Common Taylor series | ln panel: Moved interval information to front of panel (rather than have interval information as a parenthetic phrase at end of panel) | 2020-02-22 | 0:45 |

Released | Medium | Missing item | AP Calculus BC | 5.3.2 | Series calculus tricks Obtaining series | Added various faint hints of concern about intervals of convergence, reformatted definite integrals on pg. 2 to take less space (integ | 2020-02-22 | 1:47 |

Released | SYNC | (Master folder) | 2020-02-22 | 1:50 | ||||

Released | Easy | Cosmetic | AP Physics 1 | 12.1 | Electric charge and force | pg. 1 definitions for Charges in materials: Boldfacified Conductors and insulators | 2020-02-28 | 17:18 |

Released | Copy | Cosmetic | AP Physics C EM | E1.1 | Electric charge and force | pg. 1 definitions for Charges in materials: Boldfacified Conductors and insulators | 2020-02-28 | 17:20 |

Released | Easy | Cosmetic | AP Physics 2 | 15.3 | Light interrupted | Adjusted line spacings so equations would not look smushed into horizontal rules | 2020-03-01 | 16:54 |

Released | Medium | Cosmetic | AP Calculus BC | 5.1 | Series, tests, and remainders | Alternating: Added faint dots for describing remainder estimation/bound, Taylor ln graph: Changed layering of interval of convergen | 2020-03-01 | 17:18 |

Released | SYNC | (Master folder) | 2020-03-01 | 17:21 | ||||

Released | Easy | Cosmetic | AP Physics 2 | 16.3 | Raytracing to determine visibility | Car-tree-mirror figure: Reduced line width of dashed normals and perpendicular signs from 3 pt to 2 pt | 2020-03-01 | 17:32 |

Released | Medium | Missing item | AP Physics 1 | 5.2 | Not-necessarily-constant sums | Draft: Situations: Added measurement of spring deformation, changed vertical dashed line thickness, fixed text stretch for \ell, impro | 2020-03-01 | 18:09 |

Released | Copy | Missing item | AP Physics C Mech | 5.2 | Not-necessarily-constant sums | Draft: Situations: Added measurement of spring deformation, changed vertical dashed line thickness, fixed text stretch for \ell, impro | 2020-03-01 | 18:11 |

Released | Easy | Missing item | AP Physics 1 | 5.0 | Newt 2 can be re-expressed | Draft: Inherit spring deformation measurement, vertical dashed line thickness, fixed text stretch for \ell, improved horizontal alignmen | 2020-03-01 | 18:18 |

Released | Copy | Missing item | AP Physics C Mech | 5.0 | Newt 2 can be re-expressed | Draft: Inherit spring deformation measurement, vertical dashed line thickness, fixed text stretch for \ell, improved horizontal alignmen | 2020-03-01 | 18:19 |

Released | Easy | Cosmetic | AP Physics 1 | 5.2 | Not-necessarily-constant sums | Spring horizontal alignments (top subpanel of top figure) | 2020-03-01 | 18:34 |

Released | Copy | Cosmetic | AP Physics C Mech | 5.2 | Not-necessarily-constant sums | Spring horizontal alignments (top subpanel of top figure) | 2020-03-01 | 18:35 |

Released | Easy | Cosmetic | AP Calculus BC | 3.6 | Integration by parts | In LIPET table, changed "Power law" to Power" | 2020-03-02 | 11:04 |

Released | Medium | Missing item | AP Calculus AB | 3.3.1 | u-sub is backwards chain rule | Added more notes about choosing u (LIPET table, prioritizing expressions "inside" operations), spelled out isolation of dx, spelled o | 2020-03-02 | 11:27 |

Released | Medium | Cosmetic | AP Physics 1 | 12.1 | Electric charge and force | Draft: Adapted charging by conduction figure as clipart near top of pg. 1 (added dashed bubbles so could talk about different syste | 2020-03-03 | 16:33 |

Released | Copy | Cosmetic | AP Physics C EM | E1.1 | Electric charge and force | Draft: Adapted charging by conduction figure as clipart near top of pg. 1 (added dashed bubbles so could talk about different syste | 2020-03-03 | 16:33 |

Released | Medium | Cosmetic | AP Physics 1 | 12.1 | Electric charge and force | Draft: In each panel with an unlabeled charged object, added labels (like Q_1); showed outgoing charge in induction middle panel | 2020-03-04 | 12:23 |

Released | Copy | Cosmetic | AP Physics C EM | E1.1 | Electric charge and force | Draft: In each panel with an unlabeled charged object, added labels (like Q_1); showed outgoing charge in induction middle panel | 2020-03-04 | 12:24 |

Released | Tedious | Cosmetic | AP Physics 1 | 7.5 | Types of collisions | Draft: Added labels to show spring compression, lots of little alignment edits | 2020-03-04 | 15:54 |

Released | Copy | Cosmetic | AP Physics C Mech | 7.5 | Types of collisions | Draft: Added labels to show spring compression, lots of little alignment edits | 2020-03-04 | 15:55 |

Released | SYNC | (Master folder) | 2020-03-04 | 15:57 | ||||

Released | Easy | Cosmetic | AP Physics 1 | 12.4 | Current | Reworded KJR (total current entering …), Romanized subscript E on power on last line on last page | 2020-03-09 | 1:50 |

Released | Easy | Cosmetic | AP Physics C EM | E2.1.1 | Current | Reworded KJR (total current entering …), Romanized subscript E on power on last line on last page | 2020-03-09 | 1:52 |

Released | Easy | Cosmetic | AP Physics 1 | 8.6 | SiQuENC Angular impulse-momentu | Changed lower bound for sum in angular impulse from EXT ON SYS to EXT->SYS, compensatorily adjusted horizontal alignment | 2020-03-10 | 13:01 |

Released | Easy | Cosmetic | AP Physics C Mech | 8.6 | SiQuENC Angular impulse-momentu | Changed lower bound for sum in angular impulse from EXT ON SYS to EXT->SYS, compensatorily adjusted horizontal alignment | 2020-03-10 | 13:02 |

Released | Easy | Cosmetic | AP Physics 1 | 12.1 | Electric charge and force | In formula e = 1.60x10^-19 C, inserted space between numerical value and unit C | 2020-03-15 | 19:40 |

Released | Copy | Cosmetic | AP Physics C EM | E1.1 | Electric charge and force | In formula e = 1.60x10^-19 C, inserted space between numerical value and unit C | 2020-03-15 | 19:42 |

Released | Medium | Cosmetic | AP Physics 1 | 12.4 | Current | KLR: Moved label for Path I (was really close to hand outline), added outer glow to label for Path I; added blue morsel to current figu | 2020-03-15 | 20:08 |

Released | Copy fig/parts | Cosmetic | AP Physics C EM | E2.1.1 | Current | KLR: Moved label for Path I (was really close to hand outline), added outer glow to label for Path I; added blue morsel to current figu | 2020-03-15 | 20:16 |

Released | SYNC | (Master folder) | 2020-03-15 | 20:18 | ||||

Released | Easy | Cosmetic | AP Physics 1 | 10.4 | SHM Ignoring gravity | Added "constant" and "uniform" to 2 locations relating to gravitational force and gravitational field, respectively | 2020-03-20 | 0:23 |

Released | Copy | Cosmetic | AP Physics C Mech | 10.4 | SHM Ignoring gravity | Added "constant" and "uniform" to 2 locations relating to gravitational force and gravitational field, respectively | 2020-03-20 | 0:25 |

Released | Easy | Cosmetic | AP Physics 1 | 10.2 | SHM UCM connection | UCM picture: whooshy streaks linewidth changed from 2 pt to 1 pt, adjusted whooshy positions; removed vertical rule in table under | 2020-03-20 | 0:31 |

Released | Copy | Cosmetic | AP Physics C Mech | 10.2 | SHM UCM connection | UCM picture: whooshy streaks linewidth changed from 2 pt to 1 pt, adjusted whooshy positions; removed vertical rule in table under | 2020-03-20 | 0:32 |

Released | Copy fig | Cosmetic | AP Physics 1 | 10.2 | SHM cribsheet | UCM picture: whooshy streaks linewidth changed from 2 pt to 1 pt, adjusted whooshy positions | 2020-03-20 | 0:34 |

Released | Copy | Cosmetic | AP Physics C Mech | 10.2 | SHM cribsheet | UCM picture: whooshy streaks linewidth changed from 2 pt to 1 pt, adjusted whooshy positions | 2020-03-20 | 0:36 |

Released | SYNC | (Master folder) | 2020-03-20 | 0:37 | ||||

Released | Easy | Cosmetic | AP Physics 1 | 4.6 | Ellipitical orbits | Added explicit formula entry for GPE, changed style of EXT ON SYS subscript for angular impulse to EXT->SYS | 2020-03-22 | 13:51 |

Released | Copy | Cosmetic | AP Physics C Mech | 4.6 | Ellipitical orbits | Added explicit formula entry for GPE, changed style of EXT ON SYS subscript for angular impulse to EXT->SYS | 2020-03-22 | 13:53 |

Released | Easy | Cosmetic | AP Physics C EM | E1.3 | Conductors near equilibrium | Changed wording for equipotential set to mention slowly nudge | 2020-03-25 | 19:16 |

Released | Copy fig | Cosmetic | AP Physics C EM | E1.2 | Electric fields and potentials with calc | Copied newer Kirchoff Loop Rule figure (pg. 2) | 2020-03-25 | 19:18 |

Released | Easy | Cosmetic | AP Physics 1 | 10.2 | SHM UCM connection | UCM figure: Added corkscrew to show counterlockwise is positive, added fulcrum AOR symbol, added 0 mark for origin | 2020-03-25 | 19:30 |

Released | Copy | Cosmetic | AP Physics C Mech | 10.2 | SHM UCM connection | UCM figure: Added corkscrew to show counterlockwise is positive, added fulcrum AOR symbol, added 0 mark for origin | 2020-03-25 | 19:32 |

Released | Easy | Cosmetic | AP Physics 1 | 10.3 | SHM cribsheet | Ideal pendulum: Changed layering so more of the semitransparent dashed grid is visible, changed end cap styles on brace for L | 2020-03-25 | 19:37 |

Released | Copy | Cosmetic | AP Physics C Mech | 10.3 | SHM cribsheet | Ideal pendulum: Changed layering so more of the semitransparent dashed grid is visible, changed end cap styles on brace for L | 2020-03-25 | 19:38 |

Released | Easy | Missing item | AP Physics 1 | 8.1 | Rotational kinematics and dynamics c | Non-slip: Frame of reference of AOR: Added omega curvy arrow | 2020-03-25 | 20:16 |

Released | Copy fig | Missing item | AP Physics C Mech | 8.1 | Rotational kinematics and dynamics c | Non-slip: Frame of reference of AOR: Added omega curvy arrow | 2020-03-25 | 20:18 |

Released | Medium | Cosmetic | AP Physics C EM | M1.1 | Magnetism with calculus | Draft: Ampere's law diagram: Added traffic symbols to represent currents puncturing through surface bounded by Amperian loop | 2020-03-25 | 20:46 |

Released | Medium | Cosmetic | AP Physics 2 | 7.5 | Fluid mechanics | Continuity & Bernoulli figures: Changed end cap styles on various dashed (and some foreground solid) curves | 2020-03-25 | 21:03 |

Released | Easy | Cosmetic | AP Physics 2 | 14.1 | Electromagnetism | Motional emf: Added subscript x to net force; Faraday's law: Got rid of absolute value bars around 1st copy of Delta # lines B/Delta t | 2020-03-31 | 13:46 |

Released | Easy | Cosmetic | AP Physics C EM | N1.1 | Electromagnetism | Motional emf: Added subscript x to net force; Faraday's law: Got rid of absolute value bars around 1st copy of d(# lines B)/dt | 2020-03-31 | 13:48 |

Released | Medium | Cosmetic | AP Physics 1 | 12.4 | Current | Current, KJR, resistor figure: Changed end cap style from round to square for dashed curved outlines (& solid outline having both li | 2020-03-31 | 13:58 |

Released | Meidum/C | Cosmetic | AP Physics C EM | E2.1.1 | Current | Current, KJR, resistor figure: Changed end cap style from round to square for dashed curved outlines (& solid outlines having both l | 2020-03-31 | 14:18 |

Released | Easy | Cosmetic | AP Physics C EM | E2.1.1 | Current | Resistor: Slightly added glow for some curved arrows and I, J text labels to improve legibility | 2020-03-31 | 16:06 |

Released | Easy | Cosmetic | AP Physics 1 | 12.4 | Current | Resistor: Slightly manipulation with outer glow to get some black symbols to separate visually | 2020-03-31 | 16:46 |

Released | Easy | Cosmetic | AP Physics C EM | E2.1.1 | Current | Resistor: Slight layering ordering change (moved current arrow layer more into background) | 2020-03-31 | 16:50 |

Released | Tedious | Missing item | Problems | End of 2019-2020 FRQs (some requi | Created | 2020-04-03 | 2:15 | |

Released | SYNC | (Master folder) | 2020-04-03 | 2:23 | ||||

Released | Medium | Missing item | Problems | 2020-0403 14h20 End of 2019-2020 | Added version with approximate category labels (QQT, PLR, LFRQ) | 2020-04-03 | 14:20 | |

Released | SYNC | 2020-04-03 | 14:22 | |||||

Released | Easy | Cosmetic | AP Physics C EM | E1.4 | Gauss's Law | The 3 little symmetry figures: End cap styles on vectors/perpendicular symbols changed from rounded to square, changed perpendi | 2020-04-08 | 16:18 |

Released | Easy | Cosmetic | AP Physics 1 | 3.4.1 | Drag force | Renamed (3.4 -> 3.4.1) | 2020-04-12 | 0:30 |

Released | Easy | Cosmetic | AP Physics C Mech | 3.4.1 | Drag force | Renamed (3.4 -> 3.4.1) | 2020-04-12 | 0:31 |

Released | Easy | Cosmetic | AP Physics C EM | E2.3 | RC Charging | Alignment/size adjustment for table of initial and final conditions | 2020-04-12 | 1:06 |

Released | Easy | Cosmetic | AP Physics C EM | N1.3 | LR Increasing current | Alignment/size adjustment for table of initial and final conditions | 2020-04-12 | 1:12 |

Released | Tedious | Missing item | AP Physics C Mech | 3.4.2 | Drag force integration (APPC) | Draft: Created handout to show integration of N2L to obtain v_y vs. t for linear drag force | 2020-04-12 | 1:58 |

Released | Easy | Cosmetic | AP Physics 1 | 10.4 | SHM Ignoring gravity | Changed y-axis line color to pure black | 2020-04-12 | 2:01 |

Released | Copy | Cosmetic | AP Physics C Mech | 10.4 | SHM Ignoring gravity | Changed y-axis line color to pure black | 2020-04-12 | 2:02 |

Released | Easy | Missing item | AP Physics C Mech | 3.4.2 | Drag force integration (APPC) | Added positively-sloped tangent segment to vy-t graph at t = 0 | 2020-04-12 | 3:09 |

Released | Medium | Cosmetic | AP Physics C EM | N1.4.1 | LC SHO Graphs | Various little line-width/dash-size/marker-size small alignment correction edits | 2020-04-12 | 3:42 |

Released | Medium | Cosmetic | AP Physics 1 | 10.1 | SHM Graphs | Various little line-width/dash-size/marker-size small alignment correction edits | 2020-04-12 | 3:45 |

Released | Copy | Cosmetic | AP Physics C Mech | 10.1 | SHM Graphs | Various little line-width/dash-size/marker-size small alignment correction edits | 2020-04-12 | 3:47 |

Released | SYNC | (Master folder) | 2020-04-12 | 3:49 | ||||

Released | Easy | Cosmetic | AP Physics C Mech | 8.1 | Rotational kinematics and dynamics c | Parallel-axis theorem: Changed subscript CM to C.O.M. | 2020-04-14 | 0:30 |

Released | Medium | Cosmetic | AP Physics 1 | 8.1 | Rotational kinematics and dynamics c | Draft: Various little end cap style/whooshy alignment/corkscrew alignment level small edits | 2020-04-15 | 17:38 |

Released | Copy figs/fi | Cosmetic | AP Physics C Mech | 8.1 | Rotational kinematics and dynamics c | Draft: Various little end cap style/whooshy alignment/corkscrew alignment level small edits | 2020-04-15 | 17:42 |

Released | Easy | Cosmetic | AP Physics 1 | 8.0.1 | Rotational statics (APP1) | Changed "Countertwist" to "Twist" (all occurrences) | 2020-04-15 | 17:44 |

Released | Copy figs | Cosmetic | AP Physics 1 | 8.2 | Torque and rotational inertia | Copied updated torque and rotational inertia figures | 2020-04-15 | 17:46 |

Released | Copy | Cosmetic | AP Physics C Mech | 8.2 | Torque and rotational inertia | Copied updated torque and rotational inertia figures | 2020-04-15 | 17:47 |

Released | Easy | Cosmetic | AP Physics C Mech | 8.1 | Rotational kinematics and dynamics c | Adjusted bottom couple whooshies on potato | 2020-04-15 | 18:03 |

Released | Easy | Cosmetic | AP Physics 1 | 8.1 | Rotational kinematics and dynamics c | Adjusted bottom couple whooshies on potato | 2020-04-15 | 18:04 |

Released | Copy fig | Cosmetic | AP Physics 1 | 8.2 | Torque and rotational inertia | Adjusted bottom couple whooshies on potato | 2020-04-15 | 18:07 |

Released | Medium | Cosmetic | AP Physics C EM | N1.4.1 | LC SHO Graphs | Extremely small nudging alignments of graph paper lines/labels | 2020-04-15 | 18:34 |

Released | Medium | Cosmetic | AP Physics 1 | 10.1 | SHM Graphs | Extremely small nudging alignments of graph paper lines/labels | 2020-04-15 | 18:40 |

Released | Copy | Cosmetic | AP Physics C Mech | 10.1 | SHM Graphs | Extremely small nudging alignments of graph paper lines/labels | 2020-04-15 | 18:41 |

Released | SYNC | (Master folder) | 2020-04-15 | 18:43 | ||||

Released | Created | Missing item | Make and solve phys | T.0.4 | Writing templates for FRQs | Created templates (fill-in-the-blank forms) | 2020-04-24 | 13:20 |

Released | Easy | Missing item | Make and solve phys | T.0.4 | Writing templates for FRQs | Front page: Added the chart-making guide (doesn't have explicit wording templates) | 2020-04-24 | 21:19 |

Released | Easy | Cosmetic | AP Physics 1 | 6.1 | Center of mass cribsheet | aCOMx and net force: net force subscripts in equations now have "arrow" style (e.g. EXT->SYS) | 2020-04-26 | 3:49 |

Released | Copy | Cosmetic | AP Physics C Mech | 6.1 | Center of mass cribsheet | aCOMx and net force: net force subscripts in equations now have "arrow" style (e.g. EXT->SYS) | 2020-04-26 | 3:51 |

Released | Easy | Missing item | AP Calculus AB | 1.4 | Continuity and IVT | Updated list of example types of continuous functions (to match College Board list, not necessarily in order) | 2020-04-30 | 11:39 |

Released | Easy | Cosmetic | AP Calculus AB | 1.1 | Limit definitions | Draft: Slight wording changes to get rid of phrasing "positively large" | 2020-04-30 | 12:12 |

Released | Easy | Cosmetic | AP Calculus AB | 1.4 | Continuity and IVT | List of function types that are continuous throughout their domains: Changed so all list items are singular adjectives | 2020-05-01 | 2:27 |

Released | Easy | Cosmetic | AP Calculus AB | 1.3 | Calculating limits | Grammar: p. 2 Arithmetic evaluation of limits: Item 1: Last paragraph: First sentence: Changed "polynomials" to "polynomial" | 2020-05-01 | 2:28 |

Released | Medium | Missing item | CRR STEML | 2.1.0 | Reading cards | Created handout (cards to remind reader steps for digesting small pieces of sentences) | 2020-05-03 | 3:52 |

Released | Easy | Cosmetic | AP Calculus AB | 1.4 | Continuity and IVT | Added extra space before comma in quotient property | 2020-05-03 | 4:25 |

Released | Easy | Cosmetic | AP Calculus AB | 2.1 | Derivatives | Added extra space before comma in quotient rule | 2020-05-03 | 4:25 |

Released | Easy | Cosmetic | AP Physics 1 | 6.1 | Center of mass cribsheet | pg. 2 top of page, right column: changed subscript style on net force EXT ON SYS became EXT->SYS | 2020-05-15 | 1:22 |

Released | Copy | Cosmetic | AP Physics C Mech | 6.1 | Center of mass cribsheet | pg. 2 top of page, right column: changed subscript style on net force EXT ON SYS became EXT->SYS | 2020-05-15 | 1:23 |

Released | Medium | Missing item | AP Physics 2 | 7.2.2 | Potential energy landscapes (APP2) | Draft: Filename now has "(APP2)", added dashed bubbles (1 for force analysis, one for energy analysis, includes text referring to re | 2020-05-15 | 1:54 |

Released | Copy fig | Missing item | AP Physics C Mech | 7.2.2 | Potential energy landscapes calc (AP | Draft: Added dashed bubbles (1 for force analysis, one for energy analysis, includes text referring to rest of system), small cosmetic | 2020-05-15 | 1:56 |

Released | Easy | Cosmetic | AP Physics 1 | 10.3 | SHM cribsheet | Pendulum: Changed A to theta_MAX in figure and equations, changed formatting of cos equations (broke into two lines because a | 2020-05-15 | 3:27 |

Released | Copy | Cosmetic | AP Physics C Mech | 10.3 | SHM cribsheet | Pendulum: Changed A to theta_MAX in figure and equations, changed formatting of cos equations (broke into two lines because a | 2020-05-15 | 3:29 |

Released | Easy | Cosmetic | AP Physics 2 | 7.2.2 | Potential energy landscapes (APP2) | Pg. 2 Dashed bubble for rest of system, reshaped to have squarer edges | 2020-05-18 | 13:48 |

Released | Easy/Copy fig | Missing item | AP Physics C Mech | 7.2.2 | Potential energy landscapes calc (AP | Pg. 3 Dashed bubble for rest of system, reshaped to have squarer edges; included similar bubble pg. 2 line integral figure | 2020-05-18 | 13:55 |

Released | Easy | Cosmetic | AP Physics C EM | E1.2 | Electric fields and potentials with calc | Pg. 2 line integral: Replaced dashed test charges with abstracted observation points | 2020-05-18 | 14:04 |

Released | Copy fig | Cosmetic | AP Physics C EM | E1.2.1 | Integrating over charge distributions a | Line integral: Replaced dashed test charges with abstracted observation points | 2020-05-18 | 14:06 |

Released | Tedious | Missing item | AP Physics 1 | 11.1 | Waves | Draft: Standing wave excitation-dissipation: Indicated some forces and vertical velocities, various scalings, added some no-smoking/ | 2020-05-19 | 15:46 |

Released | Tedious | Missing item | AP Calculus AB | 2.1 | Derivatives | Differentiability figure: Added bunch of rulers, markers, whooshies; adjusted opacities, mask alignment | 2020-05-19 | 18:04 |

Released | Easy | Cosmetic | AP Calculus AB | 1.4 | Continuity and IVT | IVT conditions wording: Used "between" instead of giving two compound inequalities f(a) < N < f(b) or f(b) < N < f(a) | 2020-05-19 | 18:06 |

Released | Medium | Cosmetic | AP Calculus AB | 2.6 | Derivative tests | Cusp and POI without tangent line figures: Added whooshies, adjusted opacities for more consistency with updated 2.1, mask align | 2020-05-19 | 18:11 |

Released | Easy | Cosmetic | AP Calculus AB | 2.4 | Extrema | Cusp portion of figure: Added whooshies, adjusted opacities for more consistency with updated 2.1, mask alignment | 2020-05-19 | 18:14 |

Released | Medium | Cosmetic | AP Calculus AB | 2.1 | Derivatives | Added some marker dots (derivative figure, product rule figure); adjusted opacities of some rulers and markers in differentiability exa | 2020-05-20 | 11:38 |

Released | Copy fig | Cosmetic | AP Calculus BC | 3.6 | Integration by parts | Added some marker dots to product rule figure | 2020-05-20 | 11:40 |

Released | Easy | Cosmetic | AP Calculus AB | 2.4 | Extrema | Adjusted some opacities of some rulers | 2020-05-20 | 11:44 |

Released | Medium | Cosmetic | AP Calculus AB | 2.6 | Derivative tests | Cusp and concavity change without tangent line figures: Adjusted some opacities of some rulers | 2020-05-20 | 11:54 |

Released | Medium | Cosmetic | AP Calculus AB | 2.6 | Derivative tests | Cusp and concavity change without tangent line figures: Adjusted white gradient control points | 2020-05-20 | 12:47 |

Released | SYNC | (Master folder) | 2020-05-20 | 12:49 | ||||

Released | Medium | Missing item | AP Physics 1 | 1.1 | 1-d Kinematics describe (APP1) | Experimental: Added alt text to all 3 figures; Adobe Acrobat screen reader does not properly render equations, probably better to m | 2020-05-21 | 13:31 |

Released | Easy delete | AP Calculus AB | 2.2.2 | Derivatives of circle functions | Moved to off-site storage in DOCX folder until can be made to look nice (not very pretty hand-drawn) | 2020-05-21 | 15:55 | |

Released | Medium | Cosmetic | AP Calculus AB | 2.2.1 | Derivatives of circle functions intjuitive | Changed derivative notation to d/dx notation | 2020-05-21 | 17:12 |

Released | Medium | Cosmetic | AP Calculus AB | 2.1 | Derivatives | Draft: Changed a bunch of prime-ish notation to Leibniz notation | 2020-05-23 | 23:11 |

Released | Easy | Cosmetic | AP Calculus AB | 3.4.1 | Derivatives inverse functions | Got rid of one instance of prime-ish notation (replaced with Leibniz) | 2020-05-23 | 23:13 |

Released | Medium | Cosmetic | AP Calculus AB | 2.1 | Derivatives | Power rule motivation: Use more Leibniz notation, increased vertical space between panels to fit Leibniz notation in title of 2nd panel | 2020-05-24 | 14:38 |

Released | Medium | Cosmetic | AP Calculus AB | 3.4.2 | Exponentials and logarithms calc | Changed some prime notation to Leibniz notation in figures, vertically centered y = e^x figure (middle figure) on pg. 1 | 2020-05-24 | 16:01 |

Released | Tedious | Cosmetic | AP Calculus AB | 2.2.1 | Derivatives of circle functions intjuitive | Various alignments, added more of the graph to the right to make it easier to discuss derivative of cos(x) | 2020-05-24 | 18:11 |

Released | Easy | Cosmetic | AP Calculus AB | 3.3.1.1 | u-sub is backwards chain rule | Various small formatting/spacing adjustments | 2020-05-24 | 21:48 |

Released | SYNC | (Master folder) | 2020-05-24 | 21:49 | ||||

Released | Tedious | Error, missing i | AP Calculus AB | 1.4 | Continuity and IVT | Quotient identity caveat corrected to g(a) \neq 0 instead of g(x) \neq 0; added text about one-sided continuity and continuity at endp | 2020-05-27 | 15:58 |

Released | Easy | Cosmetic | AP Physics 1 | 11.1 | Waves | "(axis of polarization)": Changed text gray shade from top of 2nd to bottom of 1st, slightly reformatted sound: loudness/pitch text | 2020-05-27 | 16:21 |

Released | Easy | Cosmetic | AP Physics 1 | 3.1 | Forces figures | Pg. 1: Paragraph "The preceding statement merely …": Changed text gray shade from top of 2nd to bottom of 1st | 2020-05-27 | 16:25 |

Released | Copy | Cosmetic | AP Physics C Mech | 3.1 | Forces figures | Pg. 1: Paragraph "The preceding statement merely …": Changed text gray shade from top of 2nd to bottom of 1st | 2020-05-27 | 16:26 |

Released | Easy | Cosmetic | AP Physics 1 | 3.2 | Force and Newton's laws cribsheet ( | Changed some text shading from top of 2nd to bottom of 1st | 2020-05-27 | 16:29 |

Released | Easy | Cosmetic | AP Physics C Mech | 3.2 | Force and Newton's laws cribsheet ( | Changed some text shading from top of 2nd to bottom of 1st | 2020-05-27 | 16:33 |

Released | SYNC | (Master folder) | 2020-05-27 | 16:34 | ||||

Released | Easy | Cosmetic | AP Calculus BC | 5.1 | Series, tests, and remainders | Pg. 1: Formal definitions grayed (shade: bottom of 1st), reworded two instances of "sufficiently positively large" as "a sufficiently larg | 2020-05-28 | 12:38 |

Released | Medium | Minor error | AP Calculus AB | 1.1 | Limit definitions | pg. 2 One sided limits that mismatch: Added 1 missing - subscript and 1 missing + subscript on the two figure panels; pg. 1: grayed | 2020-05-28 | 13:16 |

Released | Easy | Cosmetic | AP Physics 2 | 18.2 | Thermo second law | Brick + microstate figures: Dashed bubble spacings (made fit to bubbles), changed arrowhead styles to CS4 for energy amount arr | 2020-06-03 | 1:50 |

Released | SYNC | (Master folder) | 2020-06-03 | 1:52 | ||||

Released | Easy | Cosmetic | AP Calculus AB | 1.3 | Calculating limits | Sum rule figure: Lifted all the Lsubscript labels on vertical axis by 6.1299 pixels (for stylistic consistency with epsilon-delta figure) | 2020-06-04 | 13:21 |

Released | Tedious | Missing item | AP Calculus AB | 2.2.2 | Derivatives of circle functions | Draft: Version with streamlined text and Adobe Illustrator draft of figure (rather than ugly highlighter-drawn-by-hand version) | 2020-06-05 | 0:07 |

Released | SYNC | (Master folder) | 2020-06-05 | 0:12 | ||||

Released | Easy | Cosmetic | AP Physics 1 | 7.2.1 | Potential energy | Pg. 3: Object drop figure: Set vertical axis and tickmarks shade to #000000 (was a slightly off black) | 2020-06-05 | 12:43 |

Released | Copy | Cosmetic | AP Physics C Mech | 7.2.1 | Potential energy | Pg. 3: Object drop figure: Set vertical axis and tickmarks shade to #000000 (was a slightly off black) | 2020-06-05 | 12:45 |

Released | Easy | Cosmetic | AP Calculus AB | 2.2.2 | Derivatives of circle functions | Fig: Removed AOR pivot symbol; added notes about small \Delta\theta, added expressions with limits of difference quotients | 2020-06-05 | 13:00 |

Released | Tedious | Missing items | AP Physics 1 | 12.3.1 | Electric potential | Draft: Conductor at electrostatic equilibrium comic strip: Lots of additional labeling (e.g. forces, velocities, electron indices) | 2020-06-05 | 13:17 |

Released | Copy fig | Missing items | AP Physics C EM | E1.3 | Conductors near equilibrium | Draft: Conductor at electrostatic equilibrium comic strip: Lots of additional labeling (e.g. forces, velocities, electron indices) | 2020-06-05 | 13:19 |

Released | Tedious | Cosmetic | AP Physics 1 | 10.2 | SHM UCM connection | Draft: UCM figure: Make angle obviously not 45 deg (made noticeably smaller than 45 degrees) | 2020-06-06 | 1:58 |

Released | Copy fig | Cosmetic | AP Physics 1 | 10.3 | SHM cribsheet | Draft: UCM figure: Make angle obviously not 45 deg (made noticeably smaller than 45 degrees) | 2020-06-06 | 2:01 |

Released | Copy | Cosmetic | AP Physics C Mech | 10.2 | SHM UCM connection | Draft: UCM figure: Make angle obviously not 45 deg (made noticeably smaller than 45 degrees) | 2020-06-06 | 2:02 |

Released | Copy | Cosmetic | AP Physics C Mech | 10.3 | SHM cribsheet | Draft: UCM figure: Make angle obviously not 45 deg (made noticeably smaller than 45 degrees) | 2020-06-06 | 2:02 |

Released | SYNC | (Master folder) | 2020-06-06 | 2:03 | ||||

Released | Easy | Cosmetic | AP Physics 1 | 11.1 | Waves | Draft: Standing waves superposition intro fig: Re-laid out clocks vertically going down page, added arrow labeled Deltat = T/2, short | 2020-06-13 | 12:57 |

Released | Easy | Cosmetic | AP Calculus BC | 4.7 | Polar calculus | Made color scheme of pg. 1 figure more consistent with color scheme of AP Calc AB 2.2.2 Derivatives of circle functions | 2020-06-13 | 15:12 |

Released | Easy | Cosmetic | AP Calculus AB | 2.2.2 | Derivatives of circle functions | Made color scheme more consistent with color scheme of AP Calc BC 4.7 Polar calculus | 2020-06-13 | 15:15 |

Released | Easy | Cosmetic | AP Calculus AB | 1.4 | Continuity and IVT | Pencil test figure: Separated label "hole" from label Removable discontinuity; IVT figure: minor adjustment to brace and label "unvisit | 2020-06-19 | 3:51 |

Released | Tedious | Missing item | Make and solve phys | T.0.2 | Production system algebra-based phy | Created draft (based on drafts made since ~2020 May 4) | 2020-06-21 | 18:29 |

Released | SYNC | (Master folder) | 2020-06-21 | 18:41 | ||||

Released | Tedious | Cosmetic | AP Physics 1 | 11.1 | Waves | Snapshot, history, transverse, longitudinal figs: End cap style round->square; resonance-dissiptation fig: got rid of unnecessary refle | 2020-06-22 | 2:01 |

Released | Easy | Cosmetic | Make and solve phys | T.0.2 | Production system algebra-based phy | Small alignment/pen handle adjustments: ATorque and NetTorque connections, Si.RigEx, and Si.FixSk | 2020-06-22 | 2:10 |

Released | SYNC | (Master folder) | 2020-06-22 | 2:12 | ||||

Released | Easy | Cosmetic | Make and solve phys | T.0.2 | Production system algebra-based phy | Minor alignment, color/shade, and wording changes (e.g. … very interesting -> … is very interesting) | 2020-06-27 | 1:37 |

Released | Easy | Cosmetic | AP Calculus AB | 2.1 | Derivatives | Product rule 3d: slightly adjustments for pretty function graph curves; introduction: changed Defn. 1->Definition 1, likewise for 2, shr | 2020-06-27 | 1:49 |

Released | Copy fig | Cosmetic | AP Calculus BC | 3.6 | Integration by parts | Product rule 3d: slightly adjustments for pretty function graph curves | 2020-06-27 | 1:51 |

Released | Easy | Cosmetic | AP Calculus AB | 2.1 | Derivatives | Differentiability: Boldfaced some vocabulary being introduced, adjusted layering of some rules/whooshies, added some labeled tick | 2020-07-01 | 2:06 |

Released | Copy fig | Cosmetic | AP Calculus BC | 3.6 | Integration by partsd | Product rule 3d: Added some black arrows for function values and for foreground portion of x-axis | 2020-07-01 | 2:07 |

Released | SYNC | (Master folder) | 2020-07-01 | 2:10 | ||||

Released | Easy | Missing item | CRR STEML | 2.3.1 | Rule chart | Created item: Chart for tracking logical statements (good for taking notes in geometry) | 2020-07-03 | 1:49 |

Released | Medium | Missing item | Make and solve phys | T.0.3 | Writing arguments for FRQs | Added references and made the reference for the counterpoint exercises more complete | 2020-07-04 | 0:23 |

Released | Tedious | Missing item | Make and solve phys | T.2.1 | Make problems with the help of REA | Created draft: Handout that suggests starting from abstract representations of relationships and quantities and then working toward | 2020-07-05 | 16:12 |

Released | Tedious | Missing item | Make and solve phys | T.0.2.1 | Production system uses | Created draft based on updated version of T.0.2. Includes vignettes of ways thinking about ontological shifts can be useful when de | 2020-07-05 | 16:34 |

Released | Easy | Cosmetic | Make and solve phys | T.0.2 | Production system algebra-based phy | Updated two labels so that AngImpMom -> AngImpAngMom | 2020-07-05 | 16:37 |

Released | SYNC | (Master folder) | 2020-07-05 | 17:36 | ||||

Released | Easy | Missing item | AP Calculus AB | 2.1 | Derivatives | Quotient rule: Added intermediate form d/dx[f(x)(g(x))^-1] | 2020-07-06 | 1:38 |

Released | Easy | Cosmetic | AP Calculus AB | 1.3 | Calculating limits | Limit of a composite function & Squeeze theorem: Changed Hypotheses->Hypothesis, changed bullets of Limit of a composite func | 2020-07-06 | 23:32 |

Released | Easy | Cosmetic | AP Calculus AB | 1.4 | Continuity and IVT | Changed word Hypotheses->Hypothesis (2 instances), for Continuity of composite functions, changed bullets to numbers (to match | 2020-07-06 | 23:38 |

Released | Easy | Cosmetic | AP Calculus AB | 2.3 | l'Hospital's rule | Hypotheses->Hypothesis, Hypothesis items changed from bulleted to numbered, removed unnecessary "Therefore," near bottom ri | 2020-07-06 | 23:45 |

Released | Easy | Cosmetic | AP Calculus AB | 2.4 | Extrema | Converted Extreme Value Theorem in Hypothesis Conclusion style (with numbered conclusion items) | 2020-07-07 | 0:01 |

Released | Easy | Cosmetic | AP Calculus AB | 2.5 | Rolle & MVT | Draft: Hypotheses->Hypothesis, converted bulleted lists to numbered lists, added title "Relating average and instantaneous rates of | 2020-07-07 | 2:00 |

Released | Easy | Cosmetic | AP Calculus AB | 2.6 | Derivative tests | Draft: Pp. 4-5: Hypotheses->Hypothesis, p. 4: Formatted hypothesis subitems using numbered lists | 2020-07-07 | 2:10 |

Released | Easy | Cosmetic | AP Calculus AB | 3.2.4 | Integration table | All table header rows: Added 2 pt of spacing above and below line of text | 2020-07-07 | 2:14 |

Released | Easy | Cosmetic | AP Calculus BC | 3.8 | Improper integrals | p. 3: Comparison theorem: Hypotheses->Hypothesis, Changed bulleted hypothesis item list to numbered list, made conclusion num | 2020-07-07 | 2:25 |

Released | Easy | Cosmetic | AP Calculus BC | 5.1 | Series, tests, and remainders | Draft: Various grammatical (Hypotheses->Hypothesis) level edits | 2020-07-07 | 2:37 |

Released | Medium | Missing item | Ridge-iculously hard | R1.0.1 | Domain restriction | Created worksheet | 2020-07-08 | 6:07 |

Released | Easy | Cosmetic | CRR STEML | 2.3.1 | Rule chart | Changed wording to emphasize the idea of "allows" | 2020-07-08 | 21:52 |

Released | Medium | Cosmetic | AP Physics 1 | 11.1 | Waves | Added uparrows to sound correspondences (loudness/volume, amplitude; pitch, frequency), changed double-headed arrows to im | 2020-07-09 | 2:20 |

Released | SYNC | (Master folder) | 2020-07-09 | 2:24 | ||||

Released | Medium | Missing item | Make and solve phys | T.4 | SiQuENC rubric | Created draft (needed for tutoring today) | 2020-07-09 | 13:21 |

Released | Easy | Missing item | Ridge-iculously hard | R1.3 | Beware of challenging problems | Created draft: Table for comparing different problems from different sources | 2020-07-11 | 17:28 |

Released | Tedious | Missing item | CRR STEML | 1.1 | Learn and apply STEM knowledge | Created draft: Flowchart | 2020-07-11 | 23:35 |

Released | Easy | Cosmetic | AP Calculus AB | 1.1 | Limit definitions | One-sided limits exist, but limit does not exist figure: fixed vertical alignment of "0" for axis system, added ghostly 12.5% opacity L- a | 2020-07-14 | 1:59 |

Released | Medium | Cosmetic | AP Calculus AB | 2.1 | Derivatives | Implicit differentiation: Changed some notation (e.g. wrote 3x^-1 to make power rule easier to apply); higher derivatives: nudged so | 2020-07-14 | 2:48 |

Released | Easy | Cosmetic | AP Calculus AB | 2.3 | l'Hospital's rule | Tangent through x-intercept figure: Made distance from y-axis to x-axis label same as in Derivative figure in handout 2.1 | 2020-07-14 | 2:54 |

Released | SYNC | (Master folder) | 2020-07-14 | 2:56 | ||||

Released | Medium | Cosmetic | AP Physics 2 | 17.2.1 | Special relativity | Added quotation marks around "synchronized" (description of frame of reference), added subscript x to Deltav/Delta t (for average x | 2020-07-27 | 2:14 |

Released | Easy | Cosmetic | AP Physics 2 | 15.3 | Light interrupted | Added space in every speed of light between numerical value and units | 2020-07-27 | 2:22 |

Released | Easy | Cosmetic | AP Physics 2 | 15.1 | Physical (wave) optics | Added space in speed of light in front of units | 2020-07-27 | 2:24 |

Released | Easy | Cosmetic | AP Physics 1 | 11.1 | Waves | Added space in front of units for speeds of sound and light and for temperature (20 deg C) | 2020-07-27 | 2:26 |

Released | Easy | Cosmetic | AP Calculus AB | 2.1 | Derivatives | Higher-order derivatives text: Unified style/spacing for "prime" symbols in derivatives | 2020-08-09 | 16:29 |

Released | Easy | Cosmetic | AP Calculus AB | 1.1 | Limit definitions | In subscripts where the limit is "approaching" infinity, I added faint (bottom of 1st col shade) quotation marks around the -> | 2020-08-09 | 16:31 |

Released | Easy | Missing item | AP Calculus AB | 1.3 | Calculating limits | Draft: Trig limits figure: Added xy axis system with tickmarks at x =1 and y = 1 on axes, minor formatting changes | 2020-08-09 | 16:53 |

Released | Easy | Cosmetic | AP Physics C EM | M1.4 | Mass spectrometer | Extended mass spectrometer wall down, added +y axis label for 1st FBD, added subscript y to 1st mention of net force | 2020-08-09 | 17:21 |

Released | Copy | Cosmetic | AP Physics 2 | 13.3 | Mass spectrometer | Extended mass spectrometer wall down, added +y axis label for 1st FBD, added subscript y to 1st mention of net force | 2020-08-09 | 17:23 |

Released | Copy fig parts | Cosmetic | AP Physics 2 | 17.1.1 | Quantum physics | Updated mass spectrometer figure to be consistent with recent edits to mass spec handouts | 2020-08-09 | 17:29 |

Released | Easy | Cosmetic | AP Physics 2 | 13.1 | Magnetism | B-field from line current figure: Corrected layering error (part of a B-field loop was not correctly layered behind small white mask) | 2020-08-09 | 17:32 |

Released | Copy fig | Cosmetic | AP Physics C EM | M1.1 | Magnetism with calculus | B-field from line current figure: Corrected layering error (part of a B-field loop was not correctly layered behind small white mask) | 2020-08-09 | 17:35 |

Released | Easy | Cosmetic | AP Physics C EM | M1.1 | Magnetism with calculus | B-field superposition equation: Added "&\cdots" to subscript after 1&2 | 2020-08-09 | 17:36 |

Released | Easy | Cosmetic | AP Physics 2 | 13.1 | Magnetism | B-field superposition equation: Added "&\cdots" to subscript after 1&2 | 2020-08-09 | 17:38 |

Released | Easy | Cosmetic | AP Physics 2 | 16.3 | Raytracing to determine visibility | Eclipse: Shadow two-letter initials shrunk to 90% size, resolution increased; objects seen in mirror: changed objects | 2020-08-09 | 17:55 |

Released | SYNC | (Master folder) | 2020-08-09 | 21:08 | ||||

Released | Tedious | Missing item | CRR STEML | 2.1.1 | Reading card large | Draft: Created handout: Translating among representations | 2020-08-15 | 21:15 |

Released | Copy | Missing item | Problems | 2020-0521 FRQ bank (some require | Copied into public folder version from 2020 May 21 | 2020-08-19 | 19:36 | |

Released | SYNC | (Master folder) | 2020-08-19 | 19:37 | ||||

Released | Medium | Missing item | CRR STEML | 3.0 | REASoN grid | Created item | 2020-08-27 | 4:20 |

Released | Easy | Cosmetic | AP Physics 2 | 17.1.1 | Quantum physics | Photoelectric effect graph: Removed arrowhead on plotted line | 2020-08-29 | 22:02 |

Released | Easy | Cosmetic | AP Physics 1 | 1.1 | 1-d Kinematics describe (APP1) | Gray box showing velocity difference: Removed extra small space between Deltav and subscript 2,3 | 2020-08-29 | 22:07 |

Released | Copy fig | Cosmetic | AP Physics 1 | 1.2.2 | UAM position formula derivation | Gray box showing velocity difference: Removed extra small space between Deltav and subscript 2,3 | 2020-08-29 | 22:09 |

Released | Copy | Cosmetic | AP Physics C Mech | 1.2.2 | UAM position formula derivation | Gray box showing velocity difference: Removed extra small space between Deltav and subscript 2,3 | 2020-08-29 | 22:11 |

Released | Copy fig | Cosmetic | AP Physics C Mech | 1.1 | 1-d Kinematics describe calc (APPC) | Gray box showing velocity difference: Removed extra small space between Deltav and subscript 2,3 | 2020-08-29 | 22:13 |

Released | Easy | Missing item | AP Physics 1 | 2.2.3 | Resolve vector components using trig | Step 3: Inserted text "acute or right" | 2020-09-07 | 20:39 |

Released | Copy | Missing item | AP Physics C Mech | 2.2.3 | Resolve vector components using trig | Step 3: Inserted text "acute or right" | 2020-09-07 | 20:41 |

Released | Easy | Missing item | CRR STEML | 2.1.1.2 | Taking notes using multiple represent | Created from 2.1.1.1 (removed AP-specific language such as EU/LO/EK), changed orientation to portrait | 2020-09-07 | 21:35 |

Released | Medium | Missing item | AP Physics 1 | 2.2.1 | Vectors | Draft: Added xy axis system to first figure panel, redid layout to fit on a single 14x11" page | 2020-09-08 | 18:38 |

Released | Copy | Missing item | AP Physics C Mech | 2.2.1 | Vectors | Draft: Added xy axis system to first figure panel, redid layout to fit on a single 14x11" page | 2020-09-08 | 18:40 |

Released | Easy | Cosmetic | AP Physics 1 | 2.2.1 | Vectors | Draft: Changed table border style (removed gaps just near top of page) | 2020-09-08 | 21:41 |

Released | Copy | Cosmetic | AP Physics C Mech | 2.2.1 | Vectors | Draft: Changed table border style (removed gaps just near top of page) | 2020-09-08 | 21:42 |

Released | Tedious | Missing item | AP Physics 1 | 1.2 | 1-d Kinematics graph interpretation | Draft: Added 1st page with stick figure/scenario and corresponding x-t, vx-t, ax-t graphs | 2020-09-08 | 23:16 |

Released | Copy | Missing item | AP Physics C Mech | 1.2 | 1-d Kinematics graph interpretation | Draft: Added 1st page with stick figure/scenario and corresponding x-t, vx-t, ax-t graphs | 2020-09-08 | 23:18 |

Released | Copy fig parts | Cosmetic | AP Physics 1 | 1.1 | 1-d Kinematics describe (APP1) | Replaced UAM stick-figure panel to correct length of v4 vector | 2020-09-09 | 15:30 |

Released | Copy fig | Cosmetic | AP Physics C Mech | 1.1 | 1-d Kinematics describe calc (APPC) | Replaced UAM stick-figure panel to correct length of v4 vector | 2020-09-09 | 15:31 |

Released | Medium | Cosmetic | AP Physics 1 | 1.2.2 | UAM position formula derivation | Replaced UAM stick-figure panel to correct length of v4 vector, updated vx-t graph to have scale consistent with graph from 1.2 and | 2020-09-09 | 15:33 |

Released | Copy | Cosmetic | AP Physics C Mech | 1.2.2 | UAM position formula derivation | Replaced UAM stick-figure panel to correct length of v4 vector, updated vx-t graph to have scale consistent with graph from 1.2 and | 2020-09-09 | 15:34 |

Released | SYNC | (Master folder) | 2020-09-09 | 15:38 | ||||

Released | Easy | Cosmetic | AP Calculus AB | 1.4 | Continuity and IVT | f/g, g(a) \neq 0 changed to f/g if g(a) \neq 0 | 2020-09-12 | 3:01 |

Released | Easy | Cosmetic | AP Calculus AB | 1.3 | Calculating limits | Changed comma to "if" for division law of limits | 2020-09-12 | 3:14 |

Released | Easy | Cosmetic | AP Calculus AB | 2.1 | Derivatives | Changed comma to "if" for quotient rule | 2020-09-12 | 3:15 |

Released | SYNC | (Master folder) | 2020-09-12 | 3:16 | ||||

Released | Easy | Cosmetic | AP Physics C EM | E1.4 | Gauss's Law | Added language to title formula for flux through infinitesimal patch, in step list added language "and label" just before dA_OUT | 2020-09-28 | 16:50 |

Released | SYNC | (Master folder) | 2020-09-28 | 16:53 | ||||

Released | Medium | Missing item | AP Physics 1 | 2.2.1 | Vectors | Draft: Velocity addition: Added image of boat, six-pack plastic, axis systems | 2020-10-04 | 20:05 |

Released | Copy | Missing item | AP Physics C Mech | 2.2.1 | Vectors | Draft: Velocity addition: Added image of boat, six-pack plastic, axis systems | 2020-10-04 | 20:07 |

Released | SYNC | (Master folder) | 2020-10-04 | 20:08 | ||||

Released | Medium | Cosmetic | AP Physics 1 | 2.2.1 | Vectors | Added faint ",AVG" to subscripts in velocity addition panel text, Velocity addition figure: Decreased opacity of ",AVG" in subscripts to | 2020-10-09 | 1:06 |

Released | Copy | Cosmetic | AP Physics C Mech | 2.2.1 | Vectors | Added faint ",AVG" to subscripts in velocity addition panel text, Velocity addition figure: Decreased opacity of ",AVG" in subscripts to | 2020-10-09 | 1:08 |

Released | Easy | Cosmetic | AP Physics C Mech | 2.3 | 2-d Kinematics calc tiles (APPC) | Stroboscopic figure: Second panel: changed i and f in subscript to t and t + Delta t, respectively | 2020-10-09 | 1:18 |

Released | Easy | Cosmetic | AP Calculus AB | 3.4.1 | Derivatives inverse functions | Added "Hypothesis" and "Conclucion" titles, added hypothesis g(x) = f^{-1}(x), added "if f'(g(a)) \neq 0" in conclusion, triangle figure: | 2020-10-09 | 1:33 |

Released | SYNC | (Master folder) | 2020-10-09 | 1:36 | ||||

Released | Easy | Missing item | AP Calculus AB | 2.1 | Derivatives | Product and quotient rules: Added "(Provided that f'(x) and g'(x) exist)" | 2020-10-14 | 11:51 |

Released | Easy | Missing item | AP Calculus AB | 2.6.1 | Derivative tests sentences worksheet | (Created item from existing worksheet from tutoring) | 2020-11-24 | 13:39 |

Released | Easy | Error | AP Calculus AB | 2.4 | Extrema | Fixed definitions for maxes/mins, organized into table | 2020-12-03 | 1:54 |

Released | Easy | Missing item | AP Calculus AB | 2.6 | Derivative tests | Changed table column header "Illustration" to "Graph of f" | 2020-12-03 | 1:57 |

Released | SYNC | (Master folder) | 2020-12-03 | 1:58 | ||||

Released | Tedious | Missing item | Arbitrage-free pricing | 1.1 | No arbitrage & constancy of price rati | (Created item) | 2020-12-06 | 17:41 |

Released | Easy | Cosmetic | Arbitrage-free pricing | 1.1 | No arbitrage & constancy of price rati | Changed V_A(…, T) to V_A(…) | 2020-12-10 | 1:37 |

Released | Easy | Cosmetic | Arbitrage-free pricing | 1.1 | No arbitrage & constancy of price rati | Changed V_A to A | 2020-12-26 | 19:47 |

Released | Easy | Cosmetic | AP Physics 2 | 11.1 | Waves | Moved from AP Physics 1/ to AP Physics 2/ | 2020-12-26 | 19:58 |

Released | Easy | Cosmetic | AP Physics 2 | 11.2 | Speed of wave on string | Moved from AP Physics 1/ to AP Physics 2/ | 2020-12-26 | 19:58 |

Released | Easy | Cosmetic | AP Physics 2 | 11.4 | Doppler | Moved from AP Physics 1/ to AP Physics 2/ | 2020-12-26 | 19:58 |

Released | Easy | Cosmetic | AP Physics 2 | 12.1 | Electric charge and force | Moved from AP Physics 1/ to AP Physics 2/ | 2020-12-26 | 19:58 |

Released | Easy | Cosmetic | AP Physics 2 | 12.2 | SiQuENC Charge transfer | Moved from AP Physics 1/ to AP Physics 2/ | 2020-12-26 | 19:58 |

Released | Easy | Cosmetic | AP Physics 2 | 12.3.1 | Electric potential | Moved from AP Physics 1/ to AP Physics 2/ | 2020-12-26 | 19:58 |

Released | Easy | Cosmetic | AP Physics 2 | 12.4 | Current | Moved from AP Physics 1/ to AP Physics 2/ | 2020-12-26 | 19:58 |

Released | Easy | Cosmetic | AP Physics 2 | 12.5 | DC (equilibrated) operation | Moved from AP Physics 1/ to AP Physics 2/ | 2020-12-26 | 19:58 |

Released | Easy | Cosmetic | AP Physics 2 | 12.6 | Laboratory precautions and measure | Moved from AP Physics 1/ to AP Physics 2/ | 2020-12-26 | 19:58 |

Released | Easy | Cosmetic | AP Physics 2 | 12.7 | SiQuENC DC Circuits | Moved from AP Physics 1/ to AP Physics 2/ | 2020-12-26 | 19:58 |

Released | Easy | Cosmetic | AP Physics 2 | 11.1 | Waves | In title, changed "for AP Physics 1" to "for AP Physics 2" | 2020-12-26 | 19:59 |

Released | Easy | Cosmetic | AP Physics 2 | 12.7 | SiQuENC DC Circuits | In title, changed "for AP Physics 1" to "for AP Physics 2" | 2020-12-26 | 20:01 |

Released | SYNC | (Master folder) | 2020-12-26 | 20:06 | ||||

Released | Medium | Missing item | Arbitrage-free pricing | 2.1 | Construct arbitrage portfolios with for | (Created item) | 2020-12-26 | 21:10 |

Released | Easy | Cosmetic | Arbitrage-free pricing | 3.1 | Construct arbitrage portfolios with for | Renamed file (index now 3.1 rather than 2.1) | 2020-12-28 | 23:31 |

Released | Easy | Missing item | Arbitrage-free pricing | 2.1 | Qualitative graphical estimation of risk | Created item from page of notes from tutoring | 2020-12-28 | 23:32 |

Released | Easy | Missing item | Arbitrage-free pricing | 2.2 | Option-price duality | Created item from page of notes from tutoring | 2020-12-28 | 23:36 |

Released | SYNC | (Master folder) | 2020-12-28 | 23:37 | ||||

Released | Easy | Cosmetic | Arbitrage-free pricing | 2.2 | Option-price duality | Removed extra (2nd) page | 2020-12-28 | 23:38 |

Released | Easy | Cosmetic | Arbitrage-free pricing | 3.1 | Construct arbitrage portfolios with for | Added footer DAVIDLIAO.COM | 2020-12-28 | 23:39 |

Released | SYNC | (Master folder) | 2020-12-28 | 23:40 | ||||

Released | Easy | Cosmetic | Arbitrage-free pricing | 4.1 | Construct arbitrage portfolios with for | Renamed file (index now 4.1 rather than 3.1) | 2020-12-30 | 16:30 |

Released | Easy | Cosmetic | Arbitrage-free pricing | 3.1 | Option-price duality | Renamed file (index now 3.1 rather than 2.2) | 2020-12-30 | 16:55 |

Released | Medium | Missing item | Arbitrage-free pricing | 2.2 | Black-Scholes | Created item from notes from tutoring | 2020-12-30 | 23:35 |

Released | Easy | Cosmetic | Arbitrage-free pricing | 2.1 | Qualitative graphical estimation of risk | Moved "(x)" and flowchart curvy arrow | 2020-12-30 | 23:40 |

Released | Easy | Cosmetic | Arbitrage-free pricing | 3.1 | Option-price duality | Added asterisk (*) to name of PDF | 2020-12-30 | 23:42 |

Released | Easy | Error | Arbitrage-free pricing | 2.1 | Qualitative graphical estimation of risk | Changed notation for risk-neutral probability distribution to indicate a PMF instead of a PDF | 2020-12-30 | 23:49 |

Released | Tedious | Missing item | Arbitrage-free pricing | 1.2 | Motivation for risk-neutral pricing ansa | Created item | 2021-01-03 | 0:00 |

Released | Medium | Missing item | Arbitrage-free pricing | 1.1 IBL | Constructing arbitrage portfolios | Created item | 2021-01-03 | 0:07 |

Released | Easy | Cosmetic | Arbitrage-free pricing | 1.2 | Motivation for risk-neutral pricing ansa | Adjusted text style in first section header | 2021-01-03 | 0:09 |

Released | SYNC | (Master folder) | 2021-01-03 | 0:11 | ||||

Released | Easy | Cosmetic | Arbitrage-free pricing | 1.2 | Motivation for risk-neutral pricing ansa | Changed "single branch" to "single-branch" in running header | 2021-01-03 | 0:13 |

Released | Medium | Missing item | Arbitrage-free pricing | 0.0 | Connections between arbitrage-free p | Created item | 2021-01-03 | 0:56 |

Released | SYNC | (Master folder) | 2021-01-03 | 0:57 | ||||

Released | Easy | Missing item | Arbitrage-free pricing | 1.2 | Motivation for risk-neutral pricing ansa | Pg. 1: Added text above figure to indicate that states I and II have finite probability of being realized at time T | 2021-01-03 | 15:59 |

Released | Easy | Cosmetic | AP Physics C Mech | 0.0 | AP Physics C Mechanics outline | Changed formatting to fit onto a single letter-sized page | 2021-04-10 | 12:02 |

Released | Easy | Minor error | AP Physics C Mech | 6.2 | Mass-averaging over continuous mas | Fixed copy-paste errors: Changed m_3 x_3, m_3 y_3, & m_3 z_3 to, respectively, m_N x_N, m_N, y_N, & m_N z_N | 2021-04-11 | 18:22 |

Released | Easy | Error | AP Physics C Mech | 3.4.2 | Drag force integration (APPC) | Fixed copy-paste error: decay time labeled on time axis: changed from mg/b to m/b | 2021-04-11 | 18:29 |

Released | SYNC | (Master folder) | 2021-04-11 | 18:31 | ||||

Released | Easy | Minor error | Problems | 2021-0507 EoY FRQ Practice Packet | Edited wording for 1.5.4 QQT. Toys in slots | 2021-05-07 | 21:41 | |

Released | Easy | Minor error | AP Calculus AB | 4.2 | Using integrals for areas | Fixed typo: "RIHT " -> "RIGHT" | 2021-05-19 | 1:09 |

Released | Easy | Error | AP Physics C Mech | 3.4.2 | Drag force integration (APPC) | v_T/e no longer labels a y-velocity axis tickmark and now labels a vertical arrow showing a difference between y-velocities | 2021-05-31 | 10:13 |

Released | SYNC | (Master folder) | 2021-05-31 | 10:32 | ||||

Released | Easy | Missing item | Ridge-iculously hard | R1.0.1 | Domain restriction | Moved some stuff in 2nd and 3rd columns around, changed graphical representation of domain to, simply, graph | 2021-06-19 | 14:56 |

Released | Easy | Cosmetic | Ridge-iculously hard | R1.0.1 | Domain restriction | Changed some labels for table cells | 2021-06-21 | 16:44 |

Released | Easy | Missing item | CRR STEML | 2.3.1.1 | Rule chart (Dark) | Created black-and-white version from light-blue-and-white version | 2021-07-03 | 12:20 |

Released | SYNC | (Master folder) | 2021-07-03 | 12:22 | ||||

Released | Easy | Missing item | AP Physics 1 | 3.5 | SiQuENC Forces | Added text to Axis in BETA (If there is no direction of acceleration, orient axes to minimize the number of forces that fail to point along a drawn axis.) | 2021-09-18 | 2:57 |

Released | Copy | Missing item | AP Physics C Mech | 3.5 | SiQuENC Forces | Added text to Axis in BETA (If there is no direction of acceleration, orient axes to minimize the number of forces that fail to point along a drawn axis.) | 2021-09-18 | 2:59 |

Released | Easy | Cosmetic | AP Physics 1 | 1.3 | SiQuENC 1-d Kinematics | Added missing space: t_iand -> t_i and | 2021-09-18 | 3:00 |

Released | Copy | Cosmetic | AP Physics C Mech | 1.3 | SiQuENC 1-d Kinematics | Added missing space: t_iand -> t_i and | 2021-09-18 | 3:02 |

Released | Easy | Cosmetic | AP Physics 1 | 7.1 | Work done by a force | Figure for stronger force: Removed small green rectangle | 2021-09-18 | 3:11 |

Released | Copy | Cosmetic | AP Physics C Mech | 7.1 | Work done by a force | Figure for stronger force: Removed small green rectangle | 2021-09-18 | 3:12 |

Released | SYNC | (Master folder) | 2021-09-18 | 3:13 | ||||

Released | Medium | Missing item | Ridge-iculously hard | R1.1 | Make sadistic problems | Created item | 2021-10-15 | 14:52 |

Released | Medium | Missing item | Quant Interviewing | 1.1 | Counting | Adapted from internal precalculus notes | 2022-01-08 | 0:47 |

Released | Medium | Missing item | Quant Interviewing | 1.2 | Probability & conditional probability | Adapted from middle-school & high school precalculus notes | 2022-01-08 | 0:48 |

Released | Medium | Missing item | Quant Interviewing | 1.3 | Agile probabilistic reasoning | Created item | 2022-01-08 | 0:49 |

Released | Easy | Cosmetic | AP Physics 1 | 2.3.1 | SiQuENC 2-d Kinematics | Changed "t_iand t_f" to "t_i and t_f" | 2022-01-08 | 0:55 |

Released | Copy | Cosmetic | AP Physics C Mech | 2.3.1 | SiQuENC 2-d Kinematics | Changed "t_iand t_f" to "t_i and t_f" | 2022-01-08 | 0:56 |