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In this outdoor activity, learners investigate the relationship between the slope of a trail and soil erosion.

In this activity, learners will build a roller coaster for a marble to run on using everyday household materials such as paper towel or toilet paper rolls, cups, boxes, books, buckets, chairs, etc.

In this highly physical outdoor activity, learners construct and compare experimental trail sections to select the best trail-construction technique for their site.

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