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In this activity, learners use tinfoil to build and test their own boats - which designs will float, and which will sink?

In this activity, learners create a model of a hot air balloon using tissue paper and a hairdryer. Educators can use this activity to introduce learners to density and its role in why things float.

In this activity, learners separate materials based on their special properties to mimic the way recyclables are sorted at recycling centers.

In this activity, learners explore what makes a boat float and sink. They examine and test various objects to determine why objects float or sink.

Using a vertical wind tube and using simple materials, individuals and groups attempt to design a "satellite" that floats for at least 5 seconds.

In this activity, learners explore density and buoyancy as they design and construct rafts.

In this activity, learners build a hovercraft using a paper plate, cup, and simple motor.

Build a pinwheel that works without wind! This activity contains steps on how to build a parachuting pinwheel out of paper, a film canister, and some brads.

In this activity, learners make a parachute out of tissue paper, tape, and string. Then, learners test their parachute to see how many paper clips it can carry.