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

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

In this twist on a classic design challenge, learners will try to stop a bouncy ball from bouncing as they explore how to control the fall of an object.