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    The Exploratorium
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    In this activity, learners use their hands as tools for indirect measurement. Learners explore how to use ratios to calculate the approximate height of something that can't be measured...

    free Ages 11 - 14 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners get hands-on experience with ratios and scaling while making their own jewelry out of recycled plastic containers. Learners will practice measuring area and volume as...

    free Ages 11 - 14 45 to 60 minutes
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    The Exploratorium
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    In this activity, learners build a tool called an inclinometer that can find the height of any distant object, from a tree to the North Star. Measure the angle of an object with the inclinometer,...

    $1 - $5 per student Ages 8 - 18 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners use a string and pair of scissors to find pi in the world all around them. Take the circumference of a round object with string and cut the string to that length. Then,...

    1 cent - $1 per group Ages 11 - adult 5 to 10 minutes