Age Group: 3rd-5th grade

Total time:

Supplies

• Water glasses

• Water

• Plastic spoon

• 8 identical water glasses (optional)

• A set of measuring cups (optional)

• Paper, tape and a writing utensil (optional)

Directions

1. If you want to keep it simple, just fill up as many cups as you like and see what sounds each cup makes when tapped lightly with the spoon. Does more water in the cup create a higher or lower pitched sound?

2. If you want to get more advanced and play a real song, fill up your 8 identical water glasses with the following amounts of water:

   • 14/8 c, 12/8 c, 10/8 c, 8/8 c, 6/8 c, 4/8 c, 2/8 c, 0/8 c

3. Label the glasses, with 1 being the most full glass and 8 being the empty glass.

4. See what sound each cup makes when tapped lightly with the spoon. Does more water in the cup create a higher or lower pitched sound?