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    Oregon Museum of Science and Industry
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    Learners observe a sealed container holding a clear colorless liquid. They shake the container and the fluid turns blue. When allowed to sit for a few moments, the fluid turns colorless again....

    $1 - $5 per group Ages 6 - 14 10 to 30 minutes
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    National Health Museum
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    In this activity that can be used as a lab or demonstration, learners use Lactaid® and lactose to demonstrate the concept of enzyme action. Learners test a drop of milk and Lactaid® for the...

    Over $20 per group Ages 14 - 18 10 to 30 minutes
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    COSI
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    In this health activity (on page 3 of the PDF), learners will learn about the body‘s defenses against invasion from tiny particles. They will make their own "snot" and see firsthand how...

    $10 - $20 per group Ages 8 - 14 30 to 45 minutes
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    Lunar and Planetary Institute
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    In this activity, dry ice and other items are used to construct a demonstration model of a comet that illustrates the comet nucleus, coma, and tails. This activity introduces learners to the...

    $10 - $20 per group Ages 8 - 14 30 to 45 minutes
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    The Science House
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    In this chemistry activity, learners explore density by using four solids and 6 liquids to create colorful, layered rows. This activity can be done as a demonstration or lab, with learners trying...

    $1 - $5 per group Ages 6 - 18 5 to 10 minutes
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    The Science House
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    In this chemistry demonstration, learners investigate the rule "likes dissolve likes" by combining three, immiscible liquids to create a colorful density column. Learners are asked, "...

    $1 - $5 per group Ages 6 - 18 Under 5 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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    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