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See the Light
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In this three-part activity, learners conduct simple experiments to see how light refracts and reflects, and how colors of light affect what we see.

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

Plant Patterns
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In this outdoor mapping activity, learners explore where plants grow and map plant-distribution patterns.

Cook Food Using the Sun
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Learners build a solar oven from a cardboard pizza box, aluminum foil and plastic. Learners can use their oven to cook S'mores or other food in the sun.

Disappearing Crystals
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Learners experiment with water gel crystals, or sodium polyacrylate crystals, which absorb hundreds of times their weight in water. When in pure water, the water gel crystals cannot be seen.

How Greenhouse Gases Absorb Heat
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Learners observe two model atmospheres -- one with normal atmospheric composition and another with an elevated concentration of carbon dioxide.