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Learners investigate a pre-constructed mystery tube to determine its interior mechanism.

A group of learners has an envelope containing a series of bank checks. A few checks are removed at a time, and the team attempts to construct a plausible scenario which involves those checks.

In this activity, learners work in teams to investigate the composition of unseen materials using a variety of tools.

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).