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    COSI
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    In this activity about potential and kinetic energy, learners get to roll a can across the floor and then watch it roll back to them as if by magic. This activity is always great for looks of...

    $1 - $5 per student Ages 11 - 14 10 to 30 minutes
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    Perkins School for the Blind
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    This activity was designed for blind learners, but all types of learners can explore means of physically separating a mixture using dissolving, filtration, and evaporation. Separating a sand/salt...

    $1 - $5 per group Ages 11 - 18 10 to 30 minutes
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    Biotechnology and Biological Sciences Research Council
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    In this activity (p.8-9 of PDF), learners investigate the evolution of wheat by conducting sedimentation tests on different flours. The evolution of wheat from wild grasses demonstrates the...

    $5 - $10 per group Ages 8 - adult 10 to 30 minutes
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    American Chemical Society
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    In this activity, learners add objects and substances to carbonated water to discover that added objects increase the rate at which dissolved gas comes out of solution. Learners are then challenged...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    Twin Cities Public Television
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    This is a quick activity (on page 2 of the PDF) that illustrates how nanoscale structures, so small they're practically invisible, can produce visible/colorful effects. Learners will use clear...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    NISE Network
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    This is a demonstration about how nature inspires nanotechnology. It is easily adapted into a hands-on activity for an individual or groups. Learners discover that lotus leaves are self cleaning...

    $5 - $10 per group Ages 6 - adult 10 to 30 minutes
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    American Physical Society
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    Learners shine the light of a laser pointer through sheets of fabric that all have a different number of threads per inch. By looking at the patterns created, learners calculate the wavelength of...

    $5 - $10 per group Ages 11 - 14 10 to 30 minutes
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    Museum of Science and Industry, Chicago
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    Learners use chromatography to separate and analyze the mixture of pigments in leaves. Use this activity to discuss photosynthesis as well as why leaves change color in autumn. Safety note: Nail...

    $1 - $5 per student Ages 6 - 14 10 to 30 minutes
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    Community Science Workshop Network
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    In this activity, learners watch a figure "magically" float up through the air. Learners use 2 straws, a cup, rubber band, pipe cleaner, and piece of buoyant material to make a simple...

    $1 - $5 per student Ages 6 - 14 10 to 30 minutes
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    Smithsonian Center for Education and Museum Studies
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    In this online interactive challenge, learners choose items to represent the Earth or solar system, then determine other items to represent the Moon, or Milky Way based on their relative size. The...

    free Ages 8 - 18 10 to 30 minutes

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