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    Twin Cities Public Television
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    This activity (located on page 3 of the PDF) is a full inquiry investigation into tree growth rates. Groups of learners will count tree rings to determine each tree’s age. A thorough sample of...

    $10 - $20 per group Ages 8 - 14 45 to 60 minutes
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    Smithsonian Center for Education and Museum Studies
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    In this online interactive challenge, learners choose items to represent the Earth or solar system, then determine other items to represent the Moon, or Milky Way based on their relative size. The...

    free Ages 8 - 18 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners investigate the relative growth of lengths, areas, and volumes as cylinders are scaled up. Learners connect their experience with cylinders to the world outside the...

    $1 - $5 per group Ages 8 - 14 1 to 2 hours
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    Children's Museum Of Houston
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    In this activity, learners use measurement concepts to make models of what their body parts might look like if they were a snake or a chameleon.

    $1 - $5 per student Ages 8 - 11 10 to 30 minutes
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    The University of Texas McDonald Observatory
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    In this activity, learners observe colors in the flame of a burning candle to explore connections between matter, light, color and temperature -- basic concepts of matter and energy. Then, learners...

    $1 - $5 per group Ages 14 - 18 45 to 60 minutes
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    Twin Cities Public Television
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    In this activity, learners will use food cans of many different properties (sizes, shapes, and weights) and set two cans on their sides at the top of a ramp. Learners will make predictions about...

    free Ages 8 - 14 45 to 60 minutes
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    PBS
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    In this math lesson, learners practice measurement skills as they examine a soap bubble print. Learners follow a recipe to make a soap bubble solution. They use the soapy solution to blow large...

    $1 - $5 per group Ages 8 - 11 45 to 60 minutes
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    NASA
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    In this space science activity, learners explore transits and the conditions when a transit may be seen. Learners use models to investigate how a planet's size and distance from its star...

    $1 - $5 per group Ages 11 - 18 45 to 60 minutes
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    Lawrence Hall of Science
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    How do you measure a bubble when it's floating? You can't really, but in this activity, learners can measure the diameter of the ring of suds a bubble leaves on a flat surface. The fun is...

    1 cent - $1 per student Ages 4 - 14 10 to 30 minutes
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    Lunar and Planetary Institute
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    In this activity, learners measure the diameter of their water balloons, model an impact, measure the diameter of the “crater” area, and determine the ratio of impactor to crater. This activity is...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes

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