After watching the magic school bus episode on sound, students can code their understanding of sound.

In the first program, the violin is played and when we press on the cord (touch the cord on the ipad), the sound stops.

https://c.gethopscotch.com/p/znjmamp

In the second program, there are no sound but when a sound outside the ipad is made, a sound waves appear.

https://c.gethopscotch.com/p/5vtly46