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In this physics demonstration, learners will be surprised when a handkerchief holds water in an upside-down glass.

In this activity, learners will experiment with water- and air-filled balloons as a way of dampening sound before it reaches their ears.

In this activity (last activity on the page), learners make a model of the eardrum (also called the "tympanic membrane") and see how sound travels through the air.

Conduct a simple experiment to explore how temperature changes can make things expand or contract.

Learners build a simple hovercraft using air from a balloon to levitate a craft made from a compact disc (CD).

In this challenge, learners make a helium balloon hover in one spot and then move it through an obstacle course using air currents.

In this activity, learners use simple items to construct a device for indicating air pressure changes.

In this activity, learners build handheld rockets and launchers out of PVC pipes and plastic bottles. Use this activity to demonstrate acceleration, air pressure, and Newton's Laws of Motion.

In this activity, learners use simple items to construct a device for indicating air pressure changes.

In this activity, learners (at least three) work together to explore the effects of atmospheric pressure.

"Molecules in Motion" explores how materials behave and change in a vacuum.

In this activity, learners try to blow up a balloon hanging inside of an empty bottle.

Demonstrate the Bernoulli Principle using simple materials on a small or large scale.

In this activity, learners discover a trick to release the air out of a balloon without popping it.

In this activity, learners will create a model rocket out of an inflated balloon attached to a straw on a taught string.

In this activity (on page 2 of the PDF under GPS: Luge Activity), learners will construct a model hovercraft out of an empty spool and a piece of cardboard.

In this physics demonstration, learners will be surprised when a lemon slice appears to magically levitate within a pint glass.

In this activity, learners simulate Otto von Guericke's famous Magdeburg Hemispheres experiment.

This is an activity about motion, power, air and Newton’s Third Law of Motion, which states that for every action there is an equal and opposite reaction.

Learners drop two different masses of play dough and observe how long it takes them to hit the ground.