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

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

In this activity, learners explore accuracy and precision.

In this activity, learners build their own construction cranes using tongue depressors and pushpins.

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