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    American Physical Society
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    Learners experiment to see which colors of light will cause a phosphorescent (glow-in-the-dark) material to glow. Different colors of light have different wavelengths, and different amounts of...

    $10 - $20 per group Ages 11 - 14 10 to 30 minutes
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    Sciencenter
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    In this chemistry challenge, learners systematically investigate which combination of four solutions produces a deep red color. The four solutions are iron(III) chloride, ammonium thiocyanate,...

    $10 - $20 per group Ages 11 - 18 10 to 30 minutes
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    American Museum of Natural History
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    In this experiment, learners work in teams to investigate how the color of a surface influences its ability to reflect light and therefore heat. The ratio of light reflected to that received is...

    $1 - $5 per group Ages 11 - 18 45 to 60 minutes
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    University of Washington
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    In this activity (12th on the page), learners investigate their ability to discriminate (see) different colors. Learners arrange jars, each filled with water and different amounts of food coloring,...

    1 cent - $1 per group Ages 8 - 18 5 to 10 minutes
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    Optical Society of America
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    In this activity, learners explore why they can see colors in bubbles and why they change. Learners also examine what thin slits do to light and how this phenomenon is similar to that of bubbles...

    1 cent - $1 per student Ages 6 - 11 5 to 10 minutes
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    The Exploratorium
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    Align four color transparencies, each one a single color (cyan, magenta, yellow, and black), and see a beautiful full color image. Make sure you have access to a color printer that can print to a...

    1 cent - $1 per student Ages 6 - 14 Under 5 minutes
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    The Exploratorium
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    With little more than a flashlight, a straw, and a plastic lid, make an observatory so you can see the amazing colors in bubbles. Learn about how light travels in waves and how the frequency of a...

    $1 - $5 per student Ages 4 - 11 5 to 10 minutes
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    The Exploratorium
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    In this activity, learners explore liquid crystals, light and temperature. Using a postcard made of temperature-sensitive liquid crystal material, learners monitor temperature changes. By observing...

    $1 - $5 per student Ages 8 - 18 10 to 30 minutes
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    The Exploratorium
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    In this activity about afterimages, learners explore what happens when receptor cells called cones in your eye's retina get tired. Learners will stare at a simple red shape, such as a bird,...

    $1 - $5 per student Ages 6 - 14 10 to 30 minutes
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    University of Nebraska State Museum
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    This activity (on pages 24-29) combines science and art to introduce learners to how different animal pollinators spread pollen from one plant to another, and how certain shapes, colors, and smells...

    $1 - $5 per group Ages 8 - 14 1 to 2 hours

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