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In this activity, learners create a colorful bookmark using a super thin layer of nail polish on water. Learners discover that a thin film creates iridescent, rainbow colors.

In this two-part activity, learners investigate buoyancy, density and surface area as well as biodiversity and the relationship between the structure and function of organisms.

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 Ancient Egyptians used a naturally-occurring salt from the banks of the Nile River, called natron, to mummify their dead.

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

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