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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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    The Exploratorium
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    Balance a ball in the air with a hair dryer! This Exploratorium produced activity shows learners concepts like lift and air streams. You can try many different angles, speeds, and ball types.

    1 cent - $1 per student Ages 4 - 18 Under 5 minutes
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    The Exploratorium
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    In this activity, learners create a tornado in a bottle to observe a spiraling, funnel-shaped vortex. A simple connector device allows water to drain from a 2-liter bottle into a second bottle....

    $1 - $5 per student Ages 4 - 14 10 to 30 minutes
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    The Exploratorium
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    What happens when two wave pulses meet in the middle? Send waves down a spring to watch them travel and interact. This activity, developed by the Exploratorium, uses an old fashioned phone cord and...

    1 cent - $1 per student Ages 4 - 18 Under 5 minutes
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    The Exploratorium
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    Look at pictures through different color filters and you'll see them in a new way. People have used color filters in beautiful photography or sending secret messages.

    1 cent - $1 per student Ages 4 - adult 5 to 10 minutes
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    The Exploratorium
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    This activity about density provides instructions for making a miniature "lava lite" with just salt, oil, water, and food coloring. This crowd-pleasing experiment is a hands-on and...

    1 cent - $1 per student Ages 4 - 8 10 to 30 minutes
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    The Exploratorium
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    Create an instrument that you don't play--you just listen to it through tubes of various lengths. You won't be channeling your inner Zamfir, but you'll hear the sound frequencies of...

    1 cent - $1 per student Ages 4 - 14 5 to 10 minutes
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    The Exploratorium
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    A simple, yet fun activity that lets learners find the center of balance of a ruler (or any long thin object). Developed by the Exploratorium and no assembly needed.

    1 cent - $1 per student Ages 4 - adult Under 5 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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    The Exploratorium
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    We listen to stereo music systems, tv's, and radios because it simulates being where the sound originates. Sound is simply arriving at one ear before the other and you instinctively know its...

    free Ages 4 - 14 Under 5 minutes

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