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This online simulation game explores the different consequences of water levels on the Columbia River in the Pacific Northwest.

In this activity, learners will model the mechanical weathering and erosion of rocks in a stream or river.

In this activity about dinosaurs and survival, learners use scrap materials to create a miniature dinosaur habitat that includes a food source, water source, and shelter.

Learners build models of sinkholes to gain an intuitive knowledge of their physical aspects.