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In this optics activity, learners discover basic lens-making techniques by using a tennis ball to make a lens out of ice.

In this engineering activity, learners design their own board games.

In this activity, learners demonstrate the effects of cold-working (strain-hardening) and annealing. Learners discover that these processes change the load that a wire can support.

In this activity, learners explore how engineers use scales and measures when designing a manufacturing process to ensure that final products are uniform in weight or count.

This is an activity (located on page 3 of PDF under Gecko Feet Activity) about modeling a nanoscale phenomenon (gravity-defying gecko feet) with macroscale objects (shoes).

Historically, sea floor mapping (bathymetry) was done by soundings.

Each learner chews a piece of gum until it loses its flavor, and then leaves the gum to dry for several days.

In this activity, learners make optical fibers out of strips of gelatin.