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In this simple demonstration, learners investigate the properties of air pressure. Learners place an index card on top of a glass full of water, then invert the glass. The surface tension of the...

In this activity, learners build a simple "rocket" with ordinary household materials to demonstrate the basic principles behind rocketry and the principle of reaction. This activity can...

In this demonstration, learners investigate mass, gravity, and acceleration by dropping a wooden bar with a balloon attached to its underside, a mass suspended from it by rubber bands, and a sharp...

Learners complete two simple experiments to prove the existence of air and air pressure which surround us. First, they push an inverted cup into water; the air in the cup prevents water from...

In this activity, learners construct a paper glider to experiment with aerodynamic forces. Learners explore how the glider's structure, including the two flaps near the back called elevators,...

In this activity, learners complete simple exercises to investigate the relationship between force, area and pressure and their effects on materials. Use this activity to introduce learners to how...

Explore the effects of gravity on a slowly falling object: a parachute you make out of plastic bags, string and stones. You'll see how small and large parachutes act differently and the same,...

In this quick activity, learners break the tension that happens when water develops a "skin." Learners use water, pepper and some soap to discover the wonders of surface tension—the force...