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    WGBH
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    In this activity, learners use a soda can to decode a secret message. Learners wrap scytale (pronounced ski-tally) code around a can and challenge friends to see if they can crack the codes....

    1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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    COSI
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    In this mathematics activity (page 4 of the PDF), learners will explore the relationship between the diameter and circumference of an object. They will see that no matter what the object, these...

    $1 - $5 per student Ages 11 - 18 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 activity, learners use a straight line to learn about circles. Learners measure and record the diameter and circumference of different sized cylindrical objects on a chart. Learners then...

    $1 - $5 per group Ages 11 - 18 30 to 45 minutes
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    Children's Museum Of Houston
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    In this activity, learners develop an understanding of cylinders and volume as they compare two sizes of popcorn buckets.

    1 cent - $1 per group Ages 4 - 8 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners make different shapes that hold exactly one mole of gas (air). Learners are provided a face that they must measure and use as one of the sides of their three-dimensional...

    $1 - $5 per group Ages 14 - 18 30 to 45 minutes
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    The Exploratorium
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    In this design and physics challenge, learners construct a cylindrical wing, fly it, make modifications, and determine how the changes affect flight patterns. This activity introduces learners to...

    1 cent - $1 per student Ages 8 - 18 45 to 60 minutes
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    NCTM Illuminations
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    In this math lesson, learners discover the relationship between dimension and volume. Learners create two rectangular prisms and two cylinders to determine which holds more popcorn. Learners then...

    $5 - $10 per group Ages 11 - 18 1 to 2 hours