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Using simple materials from around the house and recycled materials, learners will engineer a grabber device to pick up and put down objects that are at least 12 inches away.

In this engineering design challenge, learners animate a facial expression and make a machine (zoetrope) that plays the animation back.

In this activity, learners build a figure that moves and "comes to life" when they pull its string.

In this activity, learners model directed evolution by making paper fly. Learners construct and fly paper airplanes.