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In this activity, learners build a simple tabletop seesaw to test how different variables (the position of the fulcrum, distance, weight) affect its balance under increasing weight loads.

In this invention challenge activity, learners see how many objects they can grab with a homemade "bionic" arm.

In this project, students explore how levers work, by making a puppet with moving limbs.

In this dynamic activity, learners build a catapult that launches projectiles, such as marshmallows.