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

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.

In this activity, learners search for various kinds of items made from minerals around their home or school, including toothpaste, wall paint, kitty litter, and bricks.

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

Where rainwater goes after the rain stops? And why there are rivers and lakes in some parts of the land but not in others?

Some bugs can walk on the surface of a lake, stream, river, pond or ocean.

In this outdoor activity, learners plan a simple foot path and create an environmental impact study of the natural area where the path would be.

In this fun sticker activity, learners will create a size wheel with images of objects of different size, from macroscopic scale (like an ant) to nanoscale (like DNA).

In this highly physical outdoor activity, learners construct and compare experimental trail sections to select the best trail-construction technique for their site.