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

Learners drop two different masses of play dough and observe how long it takes them to hit the ground.

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

In this activity, learners explore force and motion by constructing cardboard cars that are propelled by balloons.