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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.

In this design challenge activity, learners use two helium-filled balloons to build a blimp that can travel in a straight path across the room.

Hooray! In this design challenge activity, learners invent a device that launches a spoonful of confetti into the air. Learners are encouraged to create the biggest cloud of confetti possible.

This activity models the way Landsat satellites use a thermal infrared sensor to measure land surface temperatures.