The cam drummer
Explorers (Foundation), mission E4 Swing & Rhythm, lesson 4 of 6.
Hook
This machine plays the drums by itself. What is hiding inside?
Fair test
Turn the handle once. Count the drum hits. Can you predict how many for 3 turns?
Bonus challenge
Put a paper cup, a box and a tin under the stick. Which makes the best sound?
The build
- 🥁 Cam Drummer: Crank the handle and two drumsticks play a beat all by themselves. (level 3 of 5, about 30 minutes, 18 steps)