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In this activity, learners explore why they can see colors in bubbles and why they change.

In this activity, learners use simple materials to create giant bubbles.

Like water drops in falling rain, a CD separates white light into all the colors that make it up.

In this activity related to nanotechnology, learners observe some of the effects that result from creating a thin layer of material several nanometers thick.

In this optics activity, learners split white light into all its component colors using three household items: a compact disc, dishwashing liquid, and a hose (outside).