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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, learners explore the relative efficiency of different bulbs, specifically incandescent vs. fluorescent.

In this activity, learners actually feel the difference in energy required to light two different types of light bulbs: incandescent light and LEDs.

In this activity, learners explore conservation of energy by experimenting with a solar cell light device.