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Learners will build a lung model to understand how their lungs and diaphragm work to make them breathe.

In this activity on page 24, learners perform experiments to examine whether or not trash can float, blow around, or wash away.

In this activity, learners build one or more edible coral polyps and place them together to form a colony.

In a class demonstration, learners observe a simple water cycle model to better understand its role in pollutant transport.