Krazy Kazoos

1. Find a cardboard tube from a finished roll of toilet paper.
2. Punch a hole about halfway down the tube with a paper puncher. Or carefully poke a hole through a seam with a pencil.
3. Cut a square of wax paper about 10 cm (4 in.) by 10 cm (4 in.).
4. Place the wax paper over one end of the tube. Hold the wax paper in place with a rubber band.
5. Put the open end of the tube over your mouth. Hum with your mouth open.
   

What's going on: Place your hand on your throat and hum. Can you feel vibrations (shaking)? All sound comes from vibrations.

When you hum into the kazoo, the vibrations from your throat hit the wax paper. The wax paper begins to vibrate--and makes the buzzing "kazoo" sound.

Source: Scholastic SuperScience