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In this activity, learners investigate color vision as well as plan and conduct their own experiments.

In this activity, learners investigate the sense of sight and develop and conduct their own experiments.

In this activity, learners explore the many uses of periscopes and how this simple device was designed and is used in many applications.

In this activity, learners investigate visual perception as well as plan and conduct their own experiments.

In this activity, learners construct a projector out of cardboard to view their favorite images (such as storybook illustrations) on the wall.

In this activity, learners construct a device that projects images onto a surface, so they can trace landscapes and other sights.