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Learners use a commercially available toy to experiment with density. They fill a chamber in the toy submarine with baking powder and release it into a tank of water.

Learners design, build, and test models of "dragon boats" made from up to three milk cartons.

This online simulation game explores the different consequences of water levels on the Columbia River in the Pacific Northwest.

Learners create a small explosion by collecting hydrogen and oxygen gas together and squeezing them into a flame.

Learners work in groups to construct bridges using stale marshmallows and toothpicks.