Strips of plastic on a globe model our atmosphere.

Construct a simple battery that can power a light.

Learn how to fly with this neat mirror trick.

Send waves down a spring to watch them travel and interact.

Make yogurt from yogurt.

Investigate how to balance weights on a balance board.

Suspend a ball in a stream of air.

Does it matter which end is up?

This simple toy sounds like a swarm of bees.

Suspend an object in the air by blowing down on it.

A bicycle wheel acts like a giant gyroscope.