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    The Exploratorium
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    In this activity, learners use a laser pointer and two small rotating mirrors to create a variety of fascinating patterns, which can be easily and dramatically projected on a wall or screen. In...

    Over $20 per group Ages 11 - 18 1 to 2 hours
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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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    PBS
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    In this "Sid the Science Kid" activity, learners explore the effects of decay by comparing and contrasting something (an old pumpkin) that's decayed with the same thing before it...

    $10 - $20 per group Ages 4 - 6 10 to 30 minutes
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    Lawrence Hall of Science
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    In this outdoor activity, learners design devices that will catch prey or gather plants. After testing their devices, learners investigate the food-gathering adaptations of animals in their...

    Over $20 per group Ages 8 - 14 45 to 60 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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    Lawrence Hall of Science
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    In this online activity, learners measure aspects of their bodies in centimeters, then electronically submit data on their measurement. They can then compare their measurements to the lengths of...

    free Ages 4 - 11 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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    Community Science Workshop Network
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    In this activity, learners experiment with the density of ice, water, and oil. Learners will discover that the density of a liquid determines whether it will float above or sink below another...

    $1 - $5 per student Ages 6 - 11 10 to 30 minutes
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    Twin Cities Public Television
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    This activity (located on page 3 of the PDF) is a full inquiry investigation into tree growth rates. Groups of learners will count tree rings to determine each tree’s age. A thorough sample of...

    $10 - $20 per group Ages 8 - 14 45 to 60 minutes

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