Think Sheet Corrections
Hey, we're all human (and we do mean that, we don't use AI for this stuff). Mistakes can happen, and when you report an error, we investigate it and fix it. Below is a list of fixes to our Physics and Chemistry Think Sheets. If you own the Solution Guides for either, whenever a correction goes out, you'll receive an email as well with the fixes.
Physics Think Sheet Corrections
- v2.0.0 (October 21, 2025)
- Resetting version count
- v1.3.1 (May 13, 2025)
- Fixed Physics Sound and Music - Resonance (anssound6) Question 3, the frequency of vibration of the racket was miscalculated.
- v1.3.0 (May 4, 2025)
- Added Chemistry Unit 11 - Solids, Liquids and intermolecular Forces
- v1.2.0 (April 25, 2025)
- Fixed Chemistry "Gas4_Combined_and_Other_Gas_Laws" omission on Part 2, Problem 1 where needed volume information accidently got deleted
- v1.1.0 (March 31, 2025)
- Added Unit 10 - Gas Laws to Chemistry Solutions Guide
- v1.0.6 (March 24, 2025)
- ansenergy8 (Work-Energy Calculations)
- Problem 5 had two digits transposed in the mass (4678 instead of the correct 4768), resulting in a wrong calculation of Force.
- Additionally on Problem 5, the term for the Kinetic Energy Initial (KEi) was labeled KPEi, the P is now removed.
- ansenergy8 (Work-Energy Calculations)
- v1.0.5 (January 20, 2025)
- ansmom6 (MomentumCollisions)
- Problem 1 part's b and c had " - (13 kg)" instead of " = (13 kg)" on the first line of the equation.
- ansmom6 (MomentumCollisions)
- v1.0.4 (November 20, 2024)
- ansvect4 (VectorsProjectiles)
- Problem 1 had the incorrect CCW vector values for the 2nd and 3rd resulting vector
- ansvect2 (VectorsProjectils)
- Problem 1's 3rd part's Approx value was updated to be rounded to the nearest 5 degree vs. 15 degree. It's an approximation so not really incorrect, but also not consistent with the first vector's approx logic.
- ansvect4 (VectorsProjectiles)
- v1.0.3 (October 20, 2024)
- newtl5 + ansnewtl5 (NewtonsLaws)
- Question 6 and 7 had graphics swapped with each other.
- newtl5 + ansnewtl5 (NewtonsLaws)
- v1.0.2 (May 4, 2025)
- anssound6 (Sound and Music - Resonance)
- Question 3, the frequency of vibration of the racket was miscalculated.
- anssound6 (Sound and Music - Resonance)
- v1.0.1 (August 26, 2025)
- ansnewt11 (NewtonsLaws)
- Question 8's Net Force was miscalculated
- Added Relationships Unit (mentioned in Lesson Plan, will be added to Curriculum Corner in near future)
- ansnewt11 (NewtonsLaws)
- v1.0.0
- Initial Release
Chemistry Think Sheet Corrections
- v1.7.0 (January 30th, 2026)
- Added Units 18 (Electrochemistry) and 19 (Nuclear Chemistry)
- v1.6.0 (December 4, 2025)
- Added Units 16 (Solution Equilibria) and 17 (Thermodynamics)
- v1.5.1 (November 10, 2025)
- Fixed typo on Modern Atomic Model 1 - Question 2d. It stated compare the speed when it should have been energy.
- v1.5.0 (October 21, 2025)
- Added Unit 15 (Acids and Bases)
- v1.4.1 (August 29, 2025)
- Replaced Units 11, 12, 13 and 14 with cleaned up version (folder structure)
- v1.4.0 (August 26, 2025)
- Added Unit 12 (Thermal Chemistry), Unit 13 (Solutions), and Unit 14 (Kinetics and Equilibrium)
- v1.3.0 (May 4, 2025)
- Added Unit 11 - Solids Liquids and Intermolecular Forces
- v1.2.0 (April 25, 2025)
- Gas Laws "Gas4_Combined_and_OOther_Gas_Laws" Part 2 Question 1 was missing information needed to solve the problem. This has been restored.
- v1.1.0
- Added Unit 10 Gas Laws
- v1.0.0
- Original Version