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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.

1 cent - $1 per student Ages 8 - 18 10 to 30 minutes
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Learners observe different light sources, outdoors and indoors, using prism glasses (diffraction glasses) and color filters.

$5 - $10 per student Ages 4 - 8 10 to 30 minutes
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This activity guide includes instructions for building a spectroscope using a standard classroom overhead projector.

Over $20 per group Ages 11 - 18 45 to 60 minutes