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    NASA
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    This interactive demonstration reintroduces learners to three states of matter (solid, liquid, gas), and introduces them to a fourth state of matter, plasma. This activity also explores the...

    Over $20 per group Ages 8 - 14 5 to 10 minutes
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    COSI
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    In this physics activity, learners build their own rockets out of film canisters and construction paper. Learners discover how a chemical reaction (from a mix of water and Alka-Seltzer) creates gas...

    $5 - $10 per student Ages 6 - 18 10 to 30 minutes
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    NISE Network
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    In this activity, learners discover that the way a material behaves on the macroscale is affected by its structure on the nanoscale. Learners investigate the properties of a heat sensitive liquid...

    Over $20 per group Ages 4 - adult 10 to 30 minutes
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    The Exploratorium
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    Build a hydrometer (measures the density of a liquid) using a pipet or eyedropper.

    1 cent - $1 per student Ages 8 - 18 5 to 10 minutes
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    Science Museum of Minnesota
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    Experiment with liquids of different densities and create liquid layers. For example, oil and water have different densities: oil floats on water because it is less dense than water. A liquid that...

    1 cent - $1 per student Ages 4 - 8 10 to 30 minutes
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    Oregon Museum of Science and Industry
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    Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules. This is a good introduction to atoms and...

    $5 - $10 per group Ages 4 - 14 10 to 30 minutes
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    Oregon Museum of Science and Industry
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    In this activity, learners separate a mixture of pebbles, salt crystals, and wood pieces. They add water and pour the mixture through a strainer. The pebbles are left in the beaker, the wood is...

    $1 - $5 per group Ages 4 - adult Under 5 minutes
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    American Physical Society
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    In this simple demonstration, learners investigate the properties of air pressure. Learners place an index card on top of a glass full of water, then invert the glass. The surface tension of the...

    free Ages 8 - 14 5 to 10 minutes
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    COSI
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    In this colorful activity (page 6 of the PDF), learners will make a multicolor density column by using different concentrations of sugar solutions. They will see firsthand how differences in...

    $5 - $10 per group Ages 8 - 14 10 to 30 minutes
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    COSI
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    In this activity about magnetism (page 13 of the pdf), learners will experiment with magnets to explore how water and other liquids affect the strength of magnetic fields.

    $1 - $5 per group Ages 6 - 11 10 to 30 minutes

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