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    Twin Cities Public Television
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    This is a quick activity (on page 2 of the PDF) that illustrates how nanoscale structures, so small they're practically invisible, can produce visible/colorful effects. Learners will use clear...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    The Exploratorium
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    The beautiful iridescent colors of a bubble in a can! With this Exploratorium Science Snack, create beautiful soap films on the open end of a can to see beautiful rainbows of color.

    1 cent - $1 per student Ages 4 - 18 5 to 10 minutes
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    Twin Cities Public Television
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    This is an activity (located on page 3 of the PDF) about how visible light is affected by tiny nanoscale structures, producing iridescence on butterfly wings, soap bubbles, etc. Learners will break...

    $10 - $20 per group Ages 8 - 14 1 to 2 hours