Palm Pipes
There are a several versions of this project out there. I have two favorites.
One is by Karen L. Ostlund. Ph.D (provided by CPO Science).
The other one was originally done by Hugh Henderson.
Physics classes will be "officially" assigned the version by Dr. Ostlund. Pre-AP classes will be "officially" assigned the version done by "Hugh Henderson's Adaptor".
Feel free to improvise.
Palm Pipes: Hear the Sounds of Inquiry by K. L. Ostlund, Ph.d
Palm Pipes and Chimes originally done by H. Henderson
Have fun...