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

Learners build simple catapults and use them to launch cotton balls.

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 investigate weight by building a spring scale. They observe and record how it responds to objects with different masses.

Learners build a pendulum from a yo-yo, and then design their own experiment to determine what affects the pendulum's period of swing.