The pull-back speeder
Inventors (Intermediate), mission I5 Wheels & Measuring, lesson 4 of 6.
Hook
This speeder has gears inside. Faster, but how far?
Fair test
Measure 3 runs and find the average. Why is each run slightly different?
Bonus challenge
Plot everyone’s runs on one class chart.
The build
- 💨 Gear-Up Speeder: The spring engine sits up high and turns a BIG gear, which spins the wheels faster! (level 2 of 5, about 25 minutes, 11 steps)