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    The Exploratorium
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    In this math activity related to light, learners explore why a light, such as a candle or a streetlight, looks dimmer the farther away from it we get. The answer lies in the Inverse Square Law,...

    $5 - $10 per student Ages 11 - 18 10 to 30 minutes
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    In this optics activity, learners discover that not all shadows are black. Learners explore human color perception by using colored lights to make additive color mixtures. With three colored lights...

    $5 - $10 per group Ages 6 - 18 5 to 10 minutes
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    Why does milk make some people sick? In this activity learners explore this question and explore the chemistry of milk, and our bodies! This activity can also be used as an exploration of enzyme...

    $5 - $10 per group Ages 14 - adult 45 to 60 minutes
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    In this demonstration, learners investigate mass, gravity, and acceleration by dropping a wooden bar with a balloon attached to its underside, a mass suspended from it by rubber bands, and a sharp...

    $5 - $10 per group Ages 11 - 18 5 to 10 minutes
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    In this activity, learners make a photographic image--without a camera! Using a light source, an object to block the light, and light-sensitive paper, learners create wonderful silhouette-like...

    $5 - $10 per student Ages 11 - 18 30 to 45 minutes
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    The Exploratorium
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    The Ancient Egyptians used a naturally-occurring salt from the banks of the Nile River, called natron, to mummify their dead. Natron is made up primarily of sodium carbonate (a very efficient, but...

    $5 - $10 per group Ages 8 - 18 1 to 4 weeks
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    The Exploratorium
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    In this activity, learners make a photographic image—without a camera! Using sunlight, sun-print paper, and their hand or foot to block the light, learners create wonderful silhouette-like images...

    $5 - $10 per student Ages 6 - 18 30 to 45 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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    In this optics activity, demonstrate diffraction using a candle or a small bright flashlight bulb and a slide made with two pencils. Learners will observe the diffraction pattern and learn that...

    $5 - $10 per student Ages 8 - 18 10 to 30 minutes
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    In this activity, learners burn a peanut, which produces a flame that can be used to boil away water and count the calories contained in the peanut. Learners use a formula to calculate the calories...

    $5 - $10 per group Ages 11 - 18 10 to 30 minutes

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