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In this activity, learners test to see if carbon dioxide is present in the air we breathe in and out by using a detector made from red cabbage.

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

Most of the time, we don't have to think about breathing. In fact, you're probably breathing right now without thinking about it!

In this health activity, learners explore breathing, lungs and asthma. Learners test their lung capacity by blowing air into balloons.

In this activity, learners explore why humans sweat. Learners compare the effects of heat on a balloon filled with air and a balloon filled water.

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

Learners will build a lung model to understand how their lungs and diaphragm work to make them breathe.

In this activity, learners work in pairs to measure each other's ankles with lengths of string.

Your heart pumps blood throughout your body in one direction, around in a loop. In this activity, learners will make a model of one type of heart chamber called a ventricle.

This experiment allows learners to experience a small scale "epidemic," demonstrating the ease with which disease organisms are spread, and enables learners to determine the originator of the "epidemi