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    NOAA
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    In this activity, learners play NOAA's Carbon Tracker game and discover ways to keep track of carbon dioxide and other greenhouse gases in the world. This game will help learners better...

    free Ages 11 - 18 10 to 30 minutes
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    Lawrence Hall of Science
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    Many people get water from a source deep underground, called groundwater. In this activity learners will make a model to explore this hidden water, and see how it connects to the other bodies of...

    $10 - $20 per group Ages 6 - adult 10 to 30 minutes
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    The Exploratorium
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    Ocean acidification is a big issue due to the amount of carbon dioxide humans release. CO2 in the atmosphere is absorbed into the ocean thus changing its acidity. The more acidic the ocean becomes,...

    $1 - $5 per student Ages 11 - 18 10 to 30 minutes
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    Lawrence Hall of Science
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    Lakes, streams and other freshwater bodies are a habitat for lots of living things, big and small. In this outdoor activity, learners will build their own net in order to collect and observe their...

    $10 - $20 per group Ages 8 - adult 10 to 30 minutes
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    Lawrence Hall of Science
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    Glare from the sun and ripples from the wind can make it hard to see what's below the surface of a body of water. In this outdoor activity, learners will make their own viewscope to look...

    $5 - $10 per group Ages 6 - adult 10 to 30 minutes
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    Lawrence Hall of Science
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    Where rainwater goes after the rain stops? And why there are rivers and lakes in some parts of the land but not in others? In this activity, learners will make a model landscape using a plastic bin...

    $10 - $20 per group Ages 6 - adult 10 to 30 minutes
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    Lawrence Hall of Science
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    In some parts of the world, lakes freeze during winter. In this activity learners will explore water’s unique properties of freezing and melting, and how these relate to density and temperature....

    $5 - $10 per group Ages 8 - adult 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners explore Boyle's Law and discover that water will boil at room temperature if its pressure is lowered. Learners conduct an experiment using a plastic syringe and...

    1 cent - $1 per student Ages 11 - 18 10 to 30 minutes
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    Lawrence Hall of Science
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    In this activity, learners explore a bucket of sand and beach objects. First they sort items using observable characteristics, then they turn hard candy into "candy sand" to model where...

    $1 - $5 per group Ages 4 - adult 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners (at least three) work together to explore the effects of atmospheric pressure. A learner (at least 100 lbs) will step inside an extra large trash bag, while another...

    1 cent - $1 per group Ages 14 - 18 10 to 30 minutes

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