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In this activity on page 24, learners perform experiments to examine whether or not trash can float, blow around, or wash away.

Many people get water from a source deep underground, called groundwater.

In this activity, learners construct models of plants that are adapted to living under specific environmental conditions.

In this activity, learners gain a better understanding of how household/school waste breaks down in a landfill. Learners collect trash and then create miniature landfills in 2-liter bottles.

This is an activity about turbidity, or the amount of sediment suspended in water.

In this design challenge, learners design a storm drain cover that catches litter to protect waterways to learn about how local actions can have system-level effects.

Educator Amy O'Donnell from the American Museum of Natural History guides learners to create a diorama of a coral reef.