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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 Actuarial Foundation
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    In this math activity, younger learners count out the total amount of money needed to purchase trail mix using the fewest number of bills/coins possible. Older learners can determine fractions,...

    1 cent - $1 per group Ages 8 - 14 30 to 45 minutes
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    Science Friday
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    In this activity, learners watch a video to learn about a couple who built a home out of shipping containers in Brooklyn, New York. Next, learners design and build a 3D scale model of a shipping...

    1 cent - $1 per student Ages 11 - 18 10 to 30 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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    Bridge: Online Ocean Science Education Resource Center
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    Why is ocean water sometimes the warmest when the average daily air temperature starts to drop? In this activity, learners explore the differing heat capacities of water and air using real data....

    1 cent - $1 per student Ages 11 - 18 45 to 60 minutes
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    Science Friday
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    Learners create a tool to measure how well they grip a wet object when their fingers are smooth versus wrinkly. Are smooth or wrinkly fingers better at holding on to the object? Learners can also...

    1 cent - $1 per student Ages 11 - 14 45 to 60 minutes
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    Oregon Museum of Science and Industry
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    Learners make their own simple slide rules out of paper and learn how they work. The activity starts by having learners make an "adding slide rule," which is not a very practical device...

    1 cent - $1 per group Ages 8 - adult 10 to 30 minutes
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    Science Museum of Minnesota
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    This is a demonstration you can use to show learners how valves and pumps work in concert to move blood through the circulatory system.

    1 cent - $1 per group Ages 6 - 14 5 to 10 minutes
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    Pratt School of Engineering, Duke University
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    Learners display their findings after a study of surface area and volume. They build a mobile to show a commercially available box and a constructed cubical box of the same volume. Learners also...

    1 cent - $1 per student Ages 11 - 14 1 to 2 hours
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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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