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    Community Science Workshop Network
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    In this activity, learners experiment with the density of ice, water, and oil. Learners will discover that the density of a liquid determines whether it will float above or sink below another...

    $1 - $5 per student Ages 6 - 11 10 to 30 minutes
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    American Chemical Society
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    In this activity, learners design a crushing test and discover that identifying and controlling the variables may be difficult. Although the crushing test will not give conclusive results, it is a...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    Lunar and Planetary Institute
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    In this activity, learners drop impactors onto layers of graham crackers! The process models how impacts throughout the Moon's history have broken rocks down into a mixture of dust, rocks, and...

    $5 - $10 per group Ages 8 - 14 10 to 30 minutes
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    Community Science Workshop Network
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    In this activity, learners experiment with hydrogen peroxide, vinegar, yeast, and baking soda to produce hot and cold reactions. Use this activity to demonstrate exothermic and endothermic reactions.

    $5 - $10 per student Ages 8 - 18 10 to 30 minutes
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    Biotechnology and Biological Sciences Research Council
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    In this activity (p.3-4 of PDF), learners learn about disease transmission and antibiotic resistance. In this activity, an educator shows what could happen if one learner has not washed his/her...

    $1 - $5 per group Ages 8 - 11 10 to 30 minutes
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    NOAA
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    In this activity, learners use chocolate to explore how the Sun transfers heat to the Earth through radiation. Learners compare the melting rate between chocolate left in the sunshine and chocolate...

    1 cent - $1 per group Ages 6 - 14 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners construct a cereal chain as a model of how proteins are made in the cell. Learners build their chain off of an initial template which represents a single copy of DNA and...

    1 cent - $1 per student Ages 11 - 18 10 to 30 minutes
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    Children's Museum Of Houston
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    In this activity, learners are introduced to division and fractions as they share snacks with a group of friends.

    1 cent - $1 per group Ages 4 - 8 10 to 30 minutes
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    NISE Network
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    In this activity/demo, learners discover how liquid nitrogen cools a creamy mixture at such a rapid rate that it precipitates super fine grained (nano) ice cream. This is a fun (and tasty!) way for...

    $5 - $10 per group Ages 4 - adult 10 to 30 minutes
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    Lawrence Hall of Science
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    In this activity, learners explore a bucket of sand and beach objects. First they sort items using observable characteristics, then they turn hard candy into "candy sand" to model where...

    $1 - $5 per group Ages 4 - adult 10 to 30 minutes

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