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

In this design challenge activity, learners make a balloon hover at eye level for five seconds, and then make it move by creating air currents.

In this design challenge activity, learners use two helium-filled balloons to build a blimp that can travel in a straight path across the room.

The "Rocket Reactions" activity is an exciting way to learn about how materials interact, behave, and change.

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

In this simple activity, learners see the production of a gas, which visibly fills up a balloon placed over the neck of a bottle.