Ratio detectives
Inventors (Intermediate), mission I3 Gear Superpowers, lesson 3 of 6.
Hook
Can you predict how fast a gear turns without even trying it?
Fair test
Swap in 8, 16, 24 and 40 teeth. Predict output turns (teeth ÷ teeth), then check and fill the table.
Bonus challenge
Stack two gear pairs. Can you make the output turn 25 times for 1 crank?
The build
🧪 Gear Speed Lab: Two cranks, two gear pairs: one makes things FAST, one makes things STRONG. (level 2 of 5, about 20 minutes, 13 steps)