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In this activity, learners make scale models of the Sun and Earth out of paper mache.

In this activity/demo, learners examine a synthetic gecko tape with micron sized hairs that mimics the behavior of the gecko foot.

In this outdoor biology and math activity, learners estimate the size of a population of organisms too numerous to count.

In this activity, learners make or use pre-made clay beams to scale and proportion. Specifically, they discover that when you scale up proportionally (i.e.