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

This lesson is designed to serve as an introduction to the immune system. It can stand alone or it can lead into further studies of the immune system.

This activity (on pages 15-23) combines interactive role-playing and graphing to introduce learners to the health affects of pollen.

Our bodies defend themselves in many different ways to prevent us from getting sick.

In this environmental health activity, learners grow and observe bread mold and other kinds of common fungi over the course of 3-7 days.