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Scientists use enormous wind tunnels to test the design of planes, helicopters, even the Space Shuttle.

Learners trace, cut out and fly a boomerang, outdoors or in a large indoor space.

Using a milk-based recipe, learners create "moo glue" which is basically white school-type glue. The "secret ingredient" in milk that helps make glue is a chemical called casein.

No glue is needed for learners of any age to become marshmallow architects or engineers.

In this engineering/design/arts and crafts activity, learners design and build "platforms" or "bridges" that can hold weight, and test which glue makes the strongest structure.