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Learners build a filter from old soda bottles and dirt. They create polluted water, and pour it through their filter to clean it.

This activity (on pages 23-27) lets learners simulate the work of scientists who take core samples of Earth's rocky layers to determine geological history.

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

In this activity (on pages 10-17), learners discover how scientists study biodiversity and the health of the environment based on inspection of small areas—a process known as sampling.

In this three-part activity, learners use food to determine the effects of wind, sandblasting and water on regolith (dust) formation and deposition on Earth.