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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 explore ray optics. Learners discover that they can use a magnifying glass to create an upside-down image.

This hands-on astronomy activity allows you to create a “cutaway” telescope to clearly show how reflector and refractor telescopes work.

In this activity, learners discover that they can create a lens from a water drop. Learners test their lens by looking at words or pictures.

Did you know that using a lens one can bend light to make pictures of the world? It's true!