Question about Make Your Own Harmonica! activity

[huong1]

I found it very interesting to read this STEM lesson. I have a question, what does the structure of the Harmonica have to do with students' products? Can you explain more clearly about the physics knowledge used here? Thank you so much
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The activity can be viewed at: Make Your Own Harmonica!

[AmyCowen]

Hi - This activity has two explanatory sections at the bottom. The Digging Deeper section helps explain how the design of even this simple harmonica creates vibrations at different frequencies.

Amy
Science Buddies