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Perform this classic inertia demonstration to illustrate the transfer of potential energy to kinetic energy.

Learners build simple catapults and use them to launch cotton balls.

In this activity, learners construct speedy vehicles made out of paper plates and powered by twisted rubber bands.

In this design challenge activity, learners modify a cup so it can carry a marble down a zip line and also drop it onto a target.

In this activity, learners build mini catapults using paint paddles and a spoon. Use this activity to introduce learners to forces and projectile motion.

Learners engage in close observation of falling objects. They determine it is the amount of air resistance, not the weight of an object, which determines how quickly an object falls.

In this demonstration/activity, learners observe as a regular size marshmallow is blown through a tube made from a manila file folder.