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    The Exploratorium
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    This activity provides step-by-step instructions on how to build a rain stick, a musical instrument originating in South America. With a cardboard tube, some nails, and a handful of uncooked beans...

    $1 - $5 per student Ages 6 - 11 10 to 30 minutes
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    The Exploratorium
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    In this activity about afterimages, learners explore what happens when receptor cells called cones in your eye's retina get tired. Learners will stare at a simple red shape, such as a bird,...

    $1 - $5 per student Ages 6 - 14 10 to 30 minutes
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    The Exploratorium
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    In this activity about depth perception, learners create an optical illusion in a shoe box. By looking through the viewing hole, learners explore how they can trick their brain into thinking that...

    $1 - $5 per student Ages 6 - 18 10 to 30 minutes
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    The Exploratorium
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    An ordinary camera has a lens that makes an image on film. In a pinhole camera, a small hole replaces the lens. This activity provides instructions for recycling a potato chip can to make your own...

    $1 - $5 per student Ages 6 - 18 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners observe as soap bubbles float on a cushion of carbon dioxide gas. Learners blow bubbles into an aquarium filled with a slab of dry ice. Learners will be amazed as the...

    $1 - $5 per group Ages 6 - 14 10 to 30 minutes
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    The Exploratorium
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    With two stacks of books and a few rolls of pennies, build two kinds of bridges--a beam span and an arch span--and see how much weight each of them can hold. Besides step-by-step instructions for...

    $1 - $5 per group Ages 6 - 11 10 to 30 minutes
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    The Exploratorium
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    This activity provides instructions for building a mirrored tube--a smaller and simpler version of a submarine's periscope--that lets you see around corners and over walls. Get a hands-on...

    $1 - $5 per student Ages 6 - 14 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners use simple materials to create giant bubbles. Learners will explore what gives bubbles their shape, what makes them break or last, what causes the colors and patterns in...

    $1 - $5 per group Ages 6 - 14 10 to 30 minutes
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    The Exploratorium
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    This activity provides instructions for using cornstarch and water to make an ooze which has the properties of both a solid and liquid.

    $1 - $5 per student Ages 4 - 11 10 to 30 minutes
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    The Exploratorium
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    This activity shows learners (with adult supervision) how to make a Glitter Globe, a fabulous toy that shimmers when you shake it. The ingredients of the Globe--rubbing alcohol, vegetable oil, and...

    $1 - $5 per student Ages 6 - 11 10 to 30 minutes

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