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    PBS
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    In this math activity, learners read "The Button Box" by Margarette S. Reid and then make their own button boxes filled with different buttons. Learners count and classify the buttons and...

    $5 - $10 per group Ages 6 - 8 1 to 2 hours
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    PBS
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    In this math lesson, learners apply measurement skills to determine, in dollar bills, the capacity of a suitcase. In a fictional scenario, the prize for winning a radio contest will provide the...

    1 cent - $1 per group Ages 11 - 14 45 to 60 minutes
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    PBS
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    In this math lesson, learners learn how to construct stem and leaf plots. Learners first estimate the number of drops of water that will fit on the head of a penny. Learners write their guesses on...

    1 cent - $1 per group Ages 11 - 14 45 to 60 minutes
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    University of Washington
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    In this activity (3rd on the page), learners investigate circadian rhythms by examining how well people do with estimating time. In order to explore the question, "Do people have built in...

    free Ages 8 - 18 30 to 45 minutes
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    COSI
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    In this fun online game, learners will run their own virtual bakery in order to recognize that people have many wants, that wants are unlimited, and that resources are scarce. The goal is to enable...

    free Ages 6 - 8 10 to 30 minutes
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    PBS
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    In this math lesson, learners make estimates to analyze the number of apples per acre, and visualize the magnitude of one million. Using the thematic setting of Johnny Appleseed, learners practice...

    Over $20 per group Ages 8 - 11 1 to 2 hours
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    PBS
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    In this math lesson, learners apply mathematical modeling to solve a real-world storage problem, in which a manufacturing company is given two options for storing oil barrels. These options include...

    $10 - $20 per group Ages 11 - 14 45 to 60 minutes
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    Utah Education Network
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    In this math lesson, learners rotate through six estimating and measuring centers. First, learners read the book, "Room for Ripley" by Stuart J. Murphy, as an introduction to measurement...

    free Ages 8 - 11 45 to 60 minutes
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    The Center for Science Education @ Space Sciences Laboratory, UC Berkeley
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    In this activity, learners investigate the concepts of relative size and distance by creating a basic model of the solar system. Learners will work at one end of a hallway, large room or outdoor...

    1 cent - $1 per group Ages 6 - 14 30 to 45 minutes
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    The Exploratorium
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    In this activity, learners use their feet to estimate distances. Learners calculate the distance of one step in centimeters by measuring 10 steps at a time to reduce measurement error. Learners can...

    1 cent - $1 per group Ages 11 - 14 10 to 30 minutes

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