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Learners measure a bottle full of air, and then use a vacuum pump to remove the air. When they re-weigh the bottle, learners find the mass is about 0.8g less.

In this demonstration, learners observe vinegar and baking soda reacting to form carbon dioxide (CO2) gas.

In this activity, learners discover how to determine the distance to a lightning strike or nearby thunderstorm.

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

In "Exploring the Solar System: Stomp Rockets," participants learn about how some rockets carry science tools—not scientists—into space, and how a special kind of rocket called "sounding rockets" can

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