19 Can I See Sound? Square plate

This week's rhythms
This week's word
5th graders are starting recorder karate
Musical Lab 19 is again using a square plate
Using last lab's knowledge, we learned an F# is 180hz.
E is 320hz
B is 490hz
100hz
200hz
400hz
Before seeing 400hz, the musicologists drew a guess of what it would look like.
800hz
1600 hz -few classes had time to see this.
3200hz -even fewer saw this
6400hz

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