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This fun activity uses simple materials such as milk cartons and mirrors to introduce the ideas of optics and visual perception.

In this hands-on activity, learners investigate the functional design of leaves on a tree.

In this optics activity, learners make a lens and explore how the eye manipulates the light that enters it.

This activity (on page 3 of the PDF under GPS: Cactus Activity) is a full inquiry investigation into how some desert birds keep their cool.

In this activity about camouflage, learners create a model that shows how a flounder is able to blend into a variety of environments.