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    Association of Zoos and Aquariums
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    This is an activity about discovering the colors and beauty of nature. Learners will spend time outdoors, matching paint chip samples, colored paper, or colors of clothing to those found in nature....

    $1 - $5 per group Ages 4 - 14 30 to 45 minutes
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    Twin Cities Public Television
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    In this activity (on page 2 of the PDF), learners will see the illusion of colors produced by a rotating black and white image known as Benham’s Disk. They will experiment with rotation direction...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    The Exploratorium
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    This is an online exhibit about color perception. Learners set a random background color and then try to mix red, blue, and green light to match. Although this is a perception activity, it also...

    free Ages 6 - 18 5 to 10 minutes