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    The Exploratorium
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    In this activity, learners make their own heat waves in an aquarium. Warmer water rising through cooler water creates turbulence effects that bend light, allowing you to project swirling shadows...

    $5 - $10 per group Ages 8 - 18 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners will build a ball run contraption. Marble Machines are made from familiar materials, designed to send a rolling marble through tubes and funnels, across tracks and...

    Over $20 per group Ages 8 - adult 30 to 45 minutes
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    The Exploratorium
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    In this physics activity, learners conduct two experiments to explore free-falling. In the first experiment, water-filled plastic bottles with holes in them spurt water under normal conditions, but...

    $5 - $10 per group Ages 11 - 18 45 to 60 minutes
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    The Exploratorium
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    In this activity, learners will use a compact disc to build an air puck that can glide across a smooth tabletop. The puck glides with almost no friction on a cushion of air escaping from a balloon.

    $1 - $5 per student Ages 8 - 18 30 to 45 minutes
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    The Exploratorium
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    This science activity demonstrates the dominant eye phenomena. What does your brain do when it sees two images that conflict? In this Exploratorium produced activity, do you see an oval or circle...

    1 cent - $1 per student Ages 4 - adult Under 5 minutes
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    The Exploratorium
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    Learners construct a spectroscope out of a shoe box or mailing tube, diffraction grating, and other simple materials. They then use their spectroscope to observe spectra, the colors that make up...

    $5 - $10 per student Ages 8 - 18 30 to 45 minutes
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    The Exploratorium
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    In this activity, learners use colored candy to represent subatomic particles and make a model of an atom (Bohr model). This activity will help familiarize learners with subatomic components of an...

    $1 - $5 per student Ages 14 - 18 30 to 45 minutes
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    The Exploratorium
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    In this quick activity, learners drink Avogadro's number worth of molecules - 6.02x10^23 molecules! Learners measure 18 grams (or 18 ml) of water which is equivalent to 1 mole of water and...

    $1 - $5 per group Ages 11 - 18 5 to 10 minutes
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    The Exploratorium
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    In this optics activity, learners examine how polarized light can reveal stress patterns in clear plastic. Learners place a fork between two pieces of polarizing material and induce stress by...

    $5 - $10 per group Ages 8 - 18 5 to 10 minutes
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    The Exploratorium
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    Spin a short piece of PVC pipe that's been marked up, and watch a triangle appear. Enjoy this optical illusion from the Exploratorium's Science Snack series.

    free Ages 4 - 18 5 to 10 minutes

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