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In this activity, challenge learners to make a pencil stand on its tip using only two pieces of wire and two clothespins. Use this activity to demonstrate the center of gravity.

In this activity, learners will build the highest tower they can out of recycled materials.

In this design challenge activity, learners build a device to carry a Ping-Pong ball from the top of a zip line to the bottom in four seconds (or less!).

This online simulation game explores the different consequences of water levels on the Columbia River in the Pacific Northwest.

In this activity, learners make mobiles to explore the concepts of balance, counterbalance, weight, and counterweight.