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    NRICH
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    In this game, learners build up six stacks of cards in the middle of the table, face up, in order from 1 at the bottom to 20 on the top. The first player to get rid of all his cards is the winner....

    1 cent - $1 per group Ages 6 - 11 5 to 10 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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    The Exploratorium
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    This activity is an investigation of static electricity. What happens when you get "static cling?" Basically, you pile up electrons on one thing, which attracts the protons in something...

    1 cent - $1 per student Ages 4 - 11 5 to 10 minutes
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    National Aeronautics and Space Administration
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    In this activity, learners investigate how wind can create surface currents and how waves move. Learners also discover how wind can affect oil spills.

    1 cent - $1 per group Ages 8 - 11 45 to 60 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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    Lawrence Hall of Science
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    In this self-measuring activity, learners observe and record how many times a minute they blink, take a breath, and chew, as well as how many times a minute their heart beats. Learners are...

    1 cent - $1 per group Ages 4 - 14 30 to 45 minutes
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    COSI
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    In this weather activity which requires adult supervision, learners will get a chance to make a cloud right here on Earth! They learn about the different ingredients a cloud needs in order to form,...

    1 cent - $1 per student Ages 8 - 14 5 to 10 minutes
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    EPA
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    This lesson plan enables learners to explore the differences between weather and climate. They collect local weather data for a defined period of time, and then compare these data with longer-term...

    1 cent - $1 per group Ages 11 - 14 1 to 4 weeks

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