Design and build an original instrument from household materials, applying what you learned about pitch and loudness.
This week you are the inventor. Using everything you know about vibrations, pitch, and loudness, you will design a brand-new instrument out of things from around the house.
A good instrument design uses a real vibrating part: a stretched band, a tight surface, or something you can strike, pluck, or blow across. Think about what will vibrate, and how you could change its pitch or loudness on purpose.
Mastery looks like: They build a working instrument with an identifiable vibrating part and demonstrate at least one way to change its pitch or loudness.
Common stumbles: Building something that makes noise without a clear vibrating part; giving up after the first attempt does not work perfectly.