| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| stevie | "I found a number of the ones that use soda bottles don't really account for measuring on cylinders that aren't strait. I wrote up an activity that ..." | Read more » | over 6 years ago | |||
| stevie | "Here's another interesting idea I just found https://giphy.com/gifs/instrument-AsFbniBeEbecU " | Read more » | over 6 years ago | |||
| RadioFreeTerry | "Hi Stevie...I'm no expert in this area but in my surfing I happened across a few links on this topic recently. Hopefully these will be of some use ..." | Read more » | over 6 years ago |