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In this activity, learners explore accuracy and precision.

In this activity, learners explore trebuchet design. Teams of learners construct trebuchets from everyday materials.

In this activity, learners create a working model of a nail clipper. This activity helps learners learn the basic principles of simple machines, engineering design and model building.

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

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