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    American Chemical Society
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    In this activity on page 8 of the PDF, learners make three of Harry Potter's essential school supplies: quills, ink, and color-changing paper. Learners use supplies from the grocery store to...

    $10 - $20 per student Ages 8 - 14 1 to 7 days
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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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    This is a lesson plan for an activity in which learners, playing the role of archeologists, use math concepts about number bases to decipher the Dresden Codex, an ancient Mayan document. The lesson...

    1 cent - $1 per group Ages 8 - adult 2 to 4 hours
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    National Museum of American History
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    In this activity, learners follow simple historical maritime recipes to cook up hardtack and swanky, and then compare the foods they eat to what was served on ships in the past. This resource...

    $1 - $5 per group Ages 4 - 11 1 to 2 hours
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    The Exploratorium
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    In this physics activity, learners recreate Galileo's famous experiment, in which he dropped a heavy weight and a light weight from the top of the Leaning Tower of Pisa to show that both...

    Over $20 per group Ages 8 - 18 10 to 30 minutes
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    COSI
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    In this fun and imaginative writing assignment (page nine of the pdf), students will flex the creative side of their brains to learn more about the laws of motion and the scientific process....

    free Ages 8 - 11 45 to 60 minutes

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