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Learners investigate stress and strain by designing, building, and testing beams made from polymer clay.

In this design challenge activity, learners build a rubber band-powered rover that can scramble across the room.

Learners set up books with rubber bands stretched between the books. When two identical books are stretched apart and released, they move back toward each other an equal distance.

Learners build and investigate pendulums of different lengths. They discover that the longer the string of the pendulum, the longer the time it takes to swing.

Learners engage in close observation of falling objects. They determine it is the amount of air resistance, not the weight of an object, which determines how quickly an object falls.