Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.