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In this activity, learners use an old CD to construct a spectroscope, a device that separates light into its component colors.

In this activity (posted on March 12, 2011), learners follow the steps to construct a spectroscope, a tool used to analyze light and color.

In this activity, learners explore liquid crystals, light and temperature. Using a postcard made of temperature-sensitive liquid crystal material, learners monitor temperature changes.

This activity guide includes instructions for building a spectroscope using a standard classroom overhead projector.

In this activity, learners construct their own spectroscope as they explore and observe spectra from familiar light sources.