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

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

In this activity, learners explore their eye pupils and how they change.

In this activity, learners discover that our hands are not reliable thermometers.

In this activity related to light and perception, learners use a pinhole in an index card as a magnifying glass to help their eye focus on a nearby object.

In this four-part activity, learners explore light and sound through a variety of hands-on investigations.