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Learners examine collisions between two skateboards carrying different masses. They learn about conservation of momentum in collisions.

Learners investigate how drag affects the falling rate of objects.

In this activity, learners use tsunami time travel maps to predict how long it will take a tsunami to reach the shore.

Make impact craters with marbles (or rocks or washers) in a container of flour. Find out what you can learn about your "comets" by the craters they make.

In this activity, learners build a recording timer made from simple materials (e.g., small dc motor, sharpie pen, craft sticks, adding machine paper tape, etc.).

In this weather activity (page 1 of the PDF), learners will construct their very own anemometer to measure wind speed.

Learners build at least two different spinners (tops) to investigate how mass distribution, size, and shape affect the length of time the spinner spins.

In this engineering activity, learners will get acquainted with the basics of wind energy and power production by fabricating and testing various blade designs for table-top windmills constructed from

In this design and physics challenge, learners construct a cylindrical wing, fly it, make modifications, and determine how the changes affect flight patterns.

Learners conduct four simple experiments to demonstrate the effects of air pressure.

In this activity, learners work in teams build and launch rubberband-powered foam rockets.

In this activity, learners explore force and motion by constructing cardboard cars that are propelled by balloons.

In this design challenge, learners will create their own roller coaster using household objects for the track and a marble or small ball as their cart.

In this playful physics activity (page eight of the pdf), learners use toy cars to explore how speed and weight affect the results of collision.

In this activity, learners review the history of gumball machines and explore potential and kinetic energy, while working in teams to build a gumball slide.