🧭 Plot Summary
Anyone can pluck a rubber band or blow across a bottle and get some sound. This project is about getting a specific sound — deliberately choosing a pitch and hitting it, because you understand why the instrument makes the pitch it makes.
You'll build a real instrument out of scrap materials, then tune it using the same idea that showed up back in the bottle activity: length (and for strings, tension) controls pitch. Once it works, you'll record a short music video showing it off.
What you will do in this project
- Learn why a string or tube only rings out certain pitches — not just any frequency you want.
- Connect length and tension directly to pitch, so tuning stops being guesswork.
- Design and build a real instrument out of scrap materials.
- Tune it deliberately, using what you now know instead of trial and error alone.
- Record a short music video showing it off.
Why it matters
This is the payoff for two lessons of vocabulary. Frequency, pitch, wavelength — they all stop being test words and start being the reason your instrument sounds right (or doesn't yet).
✅ Self-Check Before You Roll On
Check off each item as you get there. These are not grades — they are your own signal.