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    Iridescent
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    In this engineering design challenge, learners build an air-powered spinning machine. As learners work their way through the design process, they can upload descriptions and images of their plans,...

    $1 - $5 per group Ages 4 - 18 1 to 2 hours
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    The Exploratorium
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    This highly visual model demonstrates the atomic theory of matter which states that a gas is made up of tiny particles of atoms that are in constant motion, smashing into each other. Balls,...

    $10 - $20 per group Ages 8 - 14 10 to 30 minutes
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    The Exploratorium
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    Demonstrate the Bernoulli Principle using simple materials on a small or large scale. This resource includes two activities that allow learners to experience the Bernoulli Principle, in which an...

    1 cent - $1 per group Ages 8 - 14 5 to 10 minutes
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    The Exploratorium
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    Get all wrapped up in a lesson about skin! In this activity, learners measure and calculate the approximate surface area of skin on someone's body as well as the amount of atmospheric force...

    $1 - $5 per group Ages 11 - 18 45 to 60 minutes
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    The Exploratorium
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    In this activity, learners create a tornado in a bottle to observe a spiraling, funnel-shaped vortex. A simple connector device allows water to drain from a 2-liter bottle into a second bottle....

    $1 - $5 per student Ages 4 - 14 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners calculate the percentage of oxygen in the atmosphere by using steel wool's ability to rust. Learners measure the volume of a test tube with a small amount of steel...

    1 cent - $1 per student Ages 11 - 18 1 to 7 days
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    COSI
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    In this physics activity (page 2 of the PDF), learners will construct their own walkalong glider. They will explore how air, though invisible, surrounds and affects other objects. Learners will...

    $1 - $5 per student Ages 8 - 18 30 to 45 minutes
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    Oregon Museum of Science and Industry
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    In this activity, learners explore two properties of gases: gases take up space and exert pressure. Learners assemble two flasks and a beaker, connecting them with stoppers and tubing. They combine...

    $5 - $10 per group Ages 11 - adult Under 5 minutes
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    Lunar and Planetary Institute
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    In this activity, learners observe the water cycle in action! Water vapor in a tumbler condenses on chilled aluminum foil — producing the liquid form of water familiar to us as rain and dew....

    1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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    Oregon Museum of Science and Industry
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    Learners observe a flask with a balloon attached over the mouth and inverted inside the flask. This display from The Nature of Matter unit in OMSI's Chemistry Lab has great potential as a...

    $1 - $5 per group Ages 11 - adult 30 to 45 minutes

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