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In this design-based lesson, learners study flood dynamics as they modify a riverbed with blockages or levees to simulate real-world scenarios.

In this activity (on pages 29-35), learners examine water pollution and filtration.

In this activity, learners consider the water features they might enjoy at a community park--a pond, brook, water playground (or "sprayground"), or pool--and what happens to the water over time.

In this activity, learners create a biosphere in a baggie.

Learners gain an intuitive knowledge of the physical aspects of watersheds by creating their own watershed models.