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In this activity, learners explore center of gravity, or balance point, of stacked blocks.

In this activity, learners build a machine made of craft sticks to multiply the levering motion of their hands and create a device that bends and extends.

In this physics activity, learners build a toy with a figure that spins around like a gymnast on the high bar.

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

In this activity, learners build mini-basketball courts using cardboard and measuring spoons. Use this activity to introduce learners to catapults, forces, and levers.

In this activity, learners explore accuracy and precision.

In this activity, learners build a seesaw powered by magnets.

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

Learners build a lever and use it to lift a load. With the load on one end of the ruler, learners add coins to the effort cup at the other end until the load is lifted.