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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.

The goal of this activity is to design, build and test a house or toy for an animal.

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

In this activity related to Archimedes' Principle, learners use water displacement to compare the volume of an expanded gummy bear with a gummy bear in its original condition.

In this engineering design challenge, learners make a bird and then control its flight with attached strings.

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

Just like birds, some dinosaurs had air-filled (pneumatic) bones, which made the dinosaurs' skeletons lighter.

In this activity, learners will discover how the thin layers of amphibians' skin allow water and other chemicals to pass through it.

This activity features two connected hands-on activities about dinosaur bones.