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Learners build particulate matter collectors--devices that collect samples of visible particulates present in polluted air.

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.

Yes, you can weigh your car by figuring out your wheel's tire pressure combined with the "tire's footprint." You'll need someone with a car, driver's license, and safety in mind.

Learners cut and fold a paper helicopter from the template in this PDF. They practice twirling the helicopter and observe what happens as they modify their tries.

In this activity, learners make a barometer, an instrument to measure change in air pressure.

In this activity, learners build a hovercraft using a paper plate, cup, and simple motor.

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

Make a one-string "guitar" by stringing a cup with some fishing line. You amplify the plucking of the string by placing a piezo contact microphone and mini battery powered amplifier inside the cup.

The goal of this activity is to build a miniature bobsled that is either the fastest or the slowest. Learners use recycled materials to design, build, and test their bobsled on a bobsled track.

In this activity related to Newton's Laws of Motion, learners build a boat powered by a propeller in the air.