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In this activity, learners investigate the properties of different types of balls.

In this activity, learners explore how engineers incorporate biometric technologies into products as well as the challenges of engineers who must weigh privacy, security and other issues when designin

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

Learners tour their school or home looking for sources of indoor air pollutants (IAPs).

In this activity, learners cut out and fold their own collapsible origami starshade, an invention that shields a telescope's camera lens from the light of a distant star so that NASA scientists can ex