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In this activity, learners use tinfoil to build and test their own boats - which designs will float, and which will sink?

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

Learners discover that soap can be used to power a boat. Learners make a simple, flat boat model, put it in water, and then add a drop of detergent at the back of the boat.

Test the buoyancy of an aluminum foil boat and an aluminum foil ball. Why does the same material in different shapes sink or float?