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In this math lesson, learners analyze the density of liquids in order to explore linear functions.

In this activity, learners build an old-fashioned paddle boat out of simple materials.

In this activity, learners explore how hot and cold water move. Learners observe that temperature and density affect how liquids rise and fall.

In this activity about the circulatory system and space travel (on page 38 of the PDF), learners use water balloons to simulate the effects of gravity and microgravity on fluid distribution in the bod