- 1002 Universal Measurement Hacks: Practice Problems and Tips to help you convert between units of weight, length, distance, and temperature
- Inorganic Chemistry Knowledge Challenge: 2190 Useful Compounds and Mixtures
- The Huge Chemistry Nerd Test: Can you get each of these 1300 Challenges Right?
- Legendary Scientist Quiz: 4100 Trivia Challenges and Questions about Nobel Prize Winners in Physics, Chemistry, and Medicine
- Test Tubes and Huge Brains: 1760 Scientists who Earned every bit of their Nobel Prizes





















