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    The Exploratorium
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    In this edible experiment, learners pour "Magic Shell" chocolate into a glass of cold water. They'll observe as pillow shaped structures form, which resemble lavas on the sea floor.

    $1 - $5 per student Ages 8 - 18 5 to 10 minutes
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    The Exploratorium
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    In this activity, learners use basic measurements of the Earth and pieces of rock and iron to estimate the mass of the Earth. Learners will calculate mass, volume, and density, convert units, and...

    free Ages 14 - 18 45 to 60 minutes
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    The Exploratorium
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    In this hands-on botany activity, learners sprout vegetables in film canisters. Learners grow nine seeds each of cabbage, radish, and parsley, experimenting with changing one variable (light, water...

    1 cent - $1 per student Ages 4 - 11 1 to 4 weeks
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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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    In this activity, learners calculate the percentage of oxygen in the atmosphere by using steel wool's ability to rust. Learners measure the volume of a test tube with a small amount of steel...

    1 cent - $1 per student Ages 11 - 18 1 to 7 days
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    The Exploratorium
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    In this activity, learners conduct an experiment to find out if steel wool will weigh more or less when it is burned. Learners will explore the effects of oxidation and rusting on the steel wool....

    $1 - $5 per student Ages 11 - 18 10 to 30 minutes

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