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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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    WGBH
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    In this activity, learners investigate how geometry plays a role in perspective. The lesson begins with a demonstration, in which learners of the same height stand side by side near the end of a...

    1 cent - $1 per group Ages 8 - 18 45 to 60 minutes
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    Oregon Museum of Science and Industry
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    In this activity (on pages 55-66 of PDF), learners fold paper into origami shapes and then combine several identical shapes into a three-dimensional structure. There are clear, colorful...

    1 cent - $1 per student Ages 4 - adult 45 to 60 minutes
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    Science Museum of Minnesota
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    Use geometry, a ruler, and a steady hand to create these amazing unfurling paper folds! Be sure to check out Simon Guest's folded "super structure" link, and to see great paper...

    1 cent - $1 per group Ages 8 - adult 1 to 2 hours
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    The Exploratorium
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    In this activity, learners explore scale by using building cubes to see how changing the length, width, and height of a three-dimensional object affects its surface area and its volume. Learners...

    1 cent - $1 per student Ages 11 - 14 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners use geometry to predict the shape of carbon. Learners twist and attach chenille stem pieces that represent bonds between different carbon atoms. Information about...

    $1 - $5 per group Ages 11 - 18 10 to 30 minutes
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    Utah Education Network
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    In this math lesson, learners follow step-by-step directions for making tangram pieces out of folded and torn paper. First, learners read "Grandfather Tang's Story" by Ann Tompert....

    1 cent - $1 per student Ages 8 - 11 10 to 30 minutes
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    Utah Education Network
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    This math activity exposes early learners to a variety of three-dimensional objects. Learners bring geometric solids (everyday objects) from home. Learners sort and graph the objects on a Floor...

    free Ages 4 - 6 10 to 30 minutes
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    The Exploratorium
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    In this geometry activity, learners explore networks painted on playgrounds, such as a four square court, and draw their own. Learners walk on every edge until they return to the starting point...

    1 cent - $1 per group Ages 8 - 11 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners discover how to rotate a flat shape into the third dimension. Learners draw and cut out a shape that has at least one straight edge on an index card. Learners use this...

    1 cent - $1 per student Ages 8 - 11 30 to 45 minutes

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