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Learners examine what happens when a tube spins in two directions at once. They push on a cardboard tube causing it to spin along its length while at the same time turning from end-to-end.

1 cent - $1 per student Ages 11 - 14 10 to 30 minutes
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In this activity, learners consider how a simple machine, a lever, turns a small push or pull (a small force) into a larger--or stronger--push or pull (a larger force).

Over $20 per group Ages 4 - 11 10 to 30 minutes