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

In this activity, learners calculate the width (horizontal diameter) of the blind spot on their retina. Learners make a blind spot tester using a piece of notebook paper.

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

In this activity (16th on the page), learners play a variation of the "I Spy" game to explore color. Learners work in teams with each team assigned a color.

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

In this activity (3rd on the page), learners conduct a series of tests to find out which of their eyes is more dominant.

In this optics activity, learners build a spy tool to secretly view things over walls or around corners.