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    Computer Science Unplugged
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    In this puzzle, learners investigate the decisions involved in linking a network between houses in a muddy city. It can lead on to a discussion of minimal spanning tree algorithms for optimizing...

    1 cent - $1 per student Ages 8 - 18 30 to 45 minutes
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    The Exploratorium
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    In this hands-on and feet-on excursion, learners take a science walk to visualize the planet's immense size and numerous structures, without the usual scale and ratio dimensions found in most...

    1 cent - $1 per group Ages 11 - 18 45 to 60 minutes
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    Oregon Institute of Marine Biology
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    In this activity, learners pretend that they are orcas and search for their "pods" using Morse code. As orcas use squeaks to communicate and keep track of each other, the learners will do...

    1 cent - $1 per student Ages 8 - 11 45 to 60 minutes
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    University of Utah
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    Somatic Cell Nuclear Transfer (SCNT) is a cloning method that involves transferring a nucleus from a somatic cell of the individual to be cloned to an enucleated egg. This activity simulates, step...

    1 cent - $1 per group Ages 11 - 18 1 to 2 hours
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    University of Utah
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    This activity is a whole-group kinesthetic demonstration that shows learners what it means to be in a "risk group" for developing heart disease based on family history and genetics....

    1 cent - $1 per group Ages 11 - 18 10 to 30 minutes
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    Science Museum of Minnesota
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    Experiment with friction and make bearings for a whirligig! This activity is a nice introduction to friction and bearings and demonstrates why bearings are useful for spinning. A related video show...

    1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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    WGBH
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    In this design challenge activity, learners build a tower that can support a tennis ball at least 18 inches off the ground while withstanding the wind from a fan. Learners will build a sturdy frame...

    1 cent - $1 per student Ages 8 - 14 30 to 45 minutes
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    WGBH
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    Professor John Endler traveled to Trinidad in the 1970s to study wild guppies. In this activity, learners take part in an online simulation of Endler's work. Learners collect data, formulate a...

    1 cent - $1 per group Ages 11 - adult 45 to 60 minutes
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    Howard Hughes Medical Institute
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    In this activity, learners use microarray technology to determine which genes are turned on and off at various points in the differentiation of pluripotent stem cells on their way to becoming...

    1 cent - $1 per group Ages 14 - adult 1 to 2 hours
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    New England Aquarium
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    In this activity about sea otters, learners make their own "otter whiskers" and use them to find objects underwater. Using simple materials, learners construct "whiskers" and...

    1 cent - $1 per student Ages 4 - 11 5 to 10 minutes

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