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In this environmental science activity (page 3 of the PDF), leaners will identify and explain the causes of erosion.

Over $20 per group Ages 8 - 11 1 to 7 days
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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.

Over $20 per group Ages 11 - 14 1 to 2 hours