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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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    Have you ever heard of a camera without a lens? In this activity, learners create a pinhole camera out of simple materials. They'll see the world in a whole new way: upside down and backwards!...

    $1 - $5 per student Ages 8 - 18 45 to 60 minutes
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    The Exploratorium
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    In this math activity related to light, learners assemble a photometer and use it to estimate the power output of the Sun. Learners construct the photometer by making a grease spot on white paper...

    1 cent - $1 per student Ages 14 - 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 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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    You may have tried to throw a curveball or a slider, or even a screwball, with an ordinary baseball and found it difficult to do. In this activity, learners use a Styrofoam ball to more easily...

    1 cent - $1 per student Ages 8 - 18 10 to 30 minutes
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    The Exploratorium
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    This is an activity to do when there is a solar eclipse! Eclipses do not happen frequently, but when one does, learners will be excited to discover that they can view the eclipse using a pinhole...

    1 cent - $1 per group Ages 8 - adult 1 to 2 hours
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    The Exploratorium
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    In this activity, learners use a simple trick of perspective to dress friends in tiny cutout clothing. Learners make tiny pants out of card stock and tape them to the end of a stick. Then, learners...

    1 cent - $1 per group Ages 6 - 18 5 to 10 minutes
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    The Exploratorium
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    In this math activity, learners observe and sketch cracking patterns in pavement. Learners use a protractor to measure and label the angles of their sketches and conclude if some angles are more...

    1 cent - $1 per student Ages 11 - 18 10 to 30 minutes