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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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    Lawrence Hall of Science
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    In this activity, learners make their own Sun tracker to explore how ancient civilizations around the world studied the Sun. After creating the tracker with simple materials, learners measure the...

    $1 - $5 per student Ages 6 - adult 10 to 30 minutes
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    Lawrence Hall of Science
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    In this outdoor activity, learners use only their senses to to find the extremes of several environmental variables or physical factors: wind, temperature, light, slope and moisture. Learners also...

    $1 - $5 per group Ages 6 - 14 30 to 45 minutes
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    Lawrence Hall of Science
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    In this collecting/comparing activity, learners work with samples of sand from different places like a lakefront, river, or ocean beach. Learners note similarities and differences among sand...

    $1 - $5 per group Ages 4 - 14 30 to 45 minutes
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    NOAA
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    In this activity, learners explore how light and dark colored objects absorb the Sun's radiations at different rates. Learners place one shiny coffee can and one coffee can painted black, each...

    $1 - $5 per group Ages 6 - 14 2 to 4 hours
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    American Association for the Advancement of Science
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    Learners build a simple solar oven from a shoebox, black construction paper, and aluminum foil. Over the course of a few hours, the oven heats up water enough to brew tea. When learners set up a...

    $1 - $5 per student Ages 8 - 11 45 to 60 minutes
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    NASA
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    This activity (on pages 10-12 of the PDF) encourages learners to consider what makes living things different from non-living things. Learners discuss a pre-selected pair of objects, one living and...

    $1 - $5 per group Ages 4 - 14 1 to 2 hours