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

In this outdoor archaeology activity, learners use mathematical skills and scientific inquiry to generate and process information from their own excavation site.

In this activity, learners model erosion using a clear shoebox and sand or soil.

In this outdoor activity, learners make their own organic-rich soil. Depending on where this activity is done, learners will probably discover that their local soil is low in organic matter.

In this outdoor activity, learners cut through and investigate rotten logs and then make log-profile puzzles for each other.