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This design challenge is an open-ended exploration of linkages, a group of parts connected by hinges, and the types of motion they can create.

Learners mix a solution of luminol with hydrogen peroxide to produce a reaction that gives off blue light.

In this activity, learners will create a diagram of the ocean zones and determine what organisms live in each zone.

In this activity, learners will explore how the human brain interprets environmental stimuli.

In this activity, learners experience firsthand how marine animals' adaptive coloration camouflages them from prey.