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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 explore how engineers work to solve the challenges of a society, such as efficient planting and harvesting.

In this activity, learners explore how civil engineers solved the challenge of moving water via irrigation.

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.