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

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

In this environmental science lesson, learners will examine the dangers of mercury and how humans contribute to growing mercury emissions on Earth.

The Chinese invented paper made from plants and cloth about 2,000 years ago. Learners follow a similar process to make paper from recycled paper.

In this activity (on pages 18-29) learners explore the impact of the March 24, 1989 oil spill in Alaska caused by the Exxon Valdez tanker.

In this activity, learners explore how various energy sources can be used to cause a turbine to rotate.