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Students design and create their own air-powered rockets, in this hands-on activity.

In this activity, learners build a carousel toy that spins when pushed down.

Learners construct an electricity-generating wind turbine out of a plastic bottle.

In this activity, learners discover that some things only stand up while they are spinning.

In this activity, learners explore how wind energy can be generated on both a large and small scale.

In this activity, learners explore the engineering design process (EDP)—the process engineers use to solve design challenges.

In this activity (page 1 of PDF under SciGirls Activity: Pet Handedness), learners will construct a simple spinning top out of a circle of construction paper, a film canister lid, and a bamboo skewer.

In this activity, learners explore how various energy sources can be used to cause a turbine to rotate.

In this activity, learners are challenged to design and construct a windmill to harness the power of wind.

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 engineering activity, learners build a device (an anemometer) to measure how fast the wind is blowing.

In this engineering activity, learners explore simple machines and then build cardboard automata using cams.

In this activity, learners are challenged to design and build a system of gears and kinematics to create a hand-stamping machine.

In this oceanography and data collection activity, learners cast real time sea state conditions using buoys from NOAA's National Data Buoy Center.

In this activity, learners build a racecar using only a rubber band, spool, straw, and paper clip! This racer is a classic toy that zips across a flat surface.

In this activity, learners explore how engineers have developed big wheels or Ferris wheels.

In this activity, learners build small animated toys that move.

In this engineering activity, learners examine bicycle mechanics and gear ratios. Learners determine which gears will help them bike a set course in the shortest amount of time.

In this activity, learners explore the history, design and motion of spinning tops. Learners work in teams of "engineers" to design and build their own tops out of everyday items.

In this activity (posted on March 27, 2011), learners follow the steps to construct a mini zoetrope, a device that produces an illusion of action from a rapid succession of static pictures.