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    University of Southern Mississippi
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    In this activity, learners make prisms from gelatin. Learners then shine light through the prisms and discover what happens. This activity introduces learners to the idea of refraction. If learners...

    $1 - $5 per student Ages 8 - adult 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners make a scale model of the Solar System and learn the real definition of "space." Learners use the online calculator to create an appropriate scale to use as a...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    The Exploratorium
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    In this activity, learners use transparent tape and polarizing material to create and project beautifully colored patterns reminiscent of abstract or geometric stained glass windows--no glass...

    $10 - $20 per student Ages 6 - 14 10 to 30 minutes
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    The Exploratorium
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    In this group activity, learners see and hear the speed of sound. A learner designated the "gonger" hits a gong, once every second, as the rest of the group watches and listens from a...

    $1 - $5 per group Ages 11 - 18 10 to 30 minutes
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    Optical Society of America
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    In this activity, learners use a laser pointer, empty soda bottle, rubber plug and water to demonstrate total internal reflection. Use this simple activity as a demonstration or group activity to...

    free Ages 14 - 18 5 to 10 minutes
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    The University of Texas McDonald Observatory
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    Can gelatin (like Jell-O ®) change the speed of light? Learners investigate the refraction properties of gelatin to calculate its index of refraction and discover that as the light travels through...

    $5 - $10 per group Ages 14 - 18 1 to 2 hours
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    Optical Society of America
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    In this optics activity, learners use paint thinner to make a small jar seem to disappear inside a larger jar. Use this activity to demonstrate the role of indexes of refraction in our ability to...

    1 cent - $1 per student Ages 8 - 14 Under 5 minutes
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    American Museum of Natural History
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    Learners test their "light-smarts" by playing a game called "Light Quest!" The game board represents an atom and each player represents an electron that has been bumped into the...

    1 cent - $1 per group Ages 8 - 18 30 to 45 minutes
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    American Museum of Natural History
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    In this activity, learners use their imaginations and picture a scene in their heads. Learners print out the four provided window pages and draw how the world would look from each of the different...

    free Ages 6 - 14 10 to 30 minutes