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    The Exploratorium
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    Why does milk make some people sick? In this activity learners explore this question and explore the chemistry of milk, and our bodies! This activity can also be used as an exploration of enzyme...

    $5 - $10 per group Ages 14 - adult 45 to 60 minutes
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    Cornell Center for Materials Research
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    In this activity, learners discover the principles of edible glass by making a supersaturated sugar solution. The goal of this activity is to provide an interesting experiment which learners of...

    $5 - $10 per group Ages 8 - adult 2 to 4 hours
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    4-H
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    In this activity about water solubility and density, learners use critical thinking skills to determine why water can dissolve some things and not others. In this two part activity, learners also...

    $5 - $10 per student Ages 8 - 11 10 to 30 minutes
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    Centers for Ocean Sciences Education Excellence
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    This activity provides a hands-on experience with a scale model, a relatively high viscosity fluid, and feeding behaviors. Learners attempt to capture "food" (a lentil) with a feeding...

    $5 - $10 per group Ages 8 - 18 30 to 45 minutes
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    Astronomical Society of the Pacific
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    In this activity (on page 5 of PDF), learners use dry ice and household materials to make scientifically accurate models of comets. Learners will investigate the ingredients in comets and how...

    $5 - $10 per group Ages 6 - adult 10 to 30 minutes
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    American Chemical Society
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    In this activity on page 12 of the PDF, learners examine how recyclable materials are separated by various properties at recycling centers. Learners determine the density of various objects as well...

    $5 - $10 per student Ages 8 - 14 45 to 60 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners conduct two activities to investigate two properties of liquids: density and viscosity. In a clear container, learners stack 7 different liquids which will layer according to their density...

    $5 - $10 per group Ages 11 - 14 30 to 45 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners create beautiful fluid motion. They explore fluid dynamics, surface tension, solubility, and buoyancy while mixing liquids together. Learners can photograph or film the fluid motion for...

    $5 - $10 per group Ages 11 - 14 45 to 60 minutes
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    Oregon Museum of Science and Industry
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    Learners use Benedict’s solution and heat to test for the presence of simple sugars in glucose, sucrose, starch, and starch combined with amylase. They find simple sugars only in the glucose and in...

    $5 - $10 per group Ages 11 - adult 10 to 30 minutes