Then I will ask the students to think of a way to actually see sound waves. This short video shows sound waves vibrating a glass of water. I will ask students to draw their observations of what happens to the water vibrations as the pitch changes: http://www.watchknowlearn.org/Video.aspx?VideoID=2452
Then I will break the students into small groups sharing one computer per group. The students will experiment with sound using Chrome Music Lab:
To assess what the students have learned, I will ask them to work in small groups to create an instrument out of recyclable materials. When they present the new instrument to the class, they will also have to change the pitch and the volume and explain why it got louder/softer and a higher/lower pitch.