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In this activity related to indoor air pollution, learners build take-home dust catchers with wax paper and petroleum jelly.

Learners design their own experiment to investigate how pollution diffuses through ground material.

In this activity (on pages 29-35), learners examine water pollution and filtration.

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.