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

In this activity, learners discuss and investigate how cameras, telescopes, and their own eyes use light in similar ways.

In this activity, learners construct a device that allows them to view 2-D images in 3-D.

In this activity, learners build inexpensive kaleidoscopes using transparency paper and foil (instead of mirrors).

In this activity, learners examine how colored lenses act like filters and absorb all colors of light except for the color of the lenses.

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

In this lab (Activity #1 on page), learners explore how we see color.

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

In this activity, learners construct three optical illusion toys to examine how our brains play tricks on what we see.

In this story time program, young learners listen to the Dr.

In this exercise (Activity #2 on page), learners test their distance vision to evaluate their overall eyesight.