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    The Exploratorium
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    In this activity, learners use geometry to predict the shape of carbon. Learners twist and attach chenille stem pieces that represent bonds between different carbon atoms. Information about...

    $1 - $5 per group Ages 11 - 18 10 to 30 minutes
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    University of Illinois Urbana-Champaign
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    In this activity, learners investigate the basic crystal structures that metal atoms form. Learners construct models of crystals using Styrofoam balls and learn about hexagonal close packing (HCP)...

    $5 - $10 per student Ages 14 - adult 45 to 60 minutes
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    Sciencenter
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    In this activity, learners use gumdrops and toothpicks to model the composition and molecular structure of three greenhouse gases: carbon dioxide (CO2), water vapor (H2O) and methane (CH4)....

    $1 - $5 per group Ages 6 - 14 10 to 30 minutes
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    Twin Cities Public Television
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    In this quick activity about the properties of water (page 1 of PDF), learners will use an eyedropper to slowly place one drop of water at a time onto a penny, counting the number of drops until...

    1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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    NASA
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    This kinesthetic science demonstration introduces learners to four states of matter: solid, liquid, gas, and plasma. In this activity, learners take on the roles as human atoms to demonstrate the...

    1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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    Community Science Workshop Network
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    In this chemistry activity, learners transform two ingredients (4% polyvinyl alcohol solution and 4% borax solution) into gooey slime. Use this activity to introduce learners to polymers, cross...

    $5 - $10 per student Ages 6 - 18 10 to 30 minutes
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    NOAA
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    In this activity (on page 1), learners role play as atoms to explore how atoms can be rearranged to make different materials. Learners group together and link arms or hold hands to form chemical...

    1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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    The Exploratorium
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    In this activity, learners stain fabrics--on purpose! Learners explore the art of natural dyeing by using dyes and substrates that are both derived from plant or animal sources as well as mordant...

    Over $20 per group Ages 11 - 18 1 to 2 hours
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    Howard Hughes Medical Institute
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    In this activity, learners use molecular model kits to construct familiar molecules like lactose, caffeine, and Aspirin. This activity helps learners understand how scientists use models to study...

    Over $20 per student Ages 11 - adult 30 to 45 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Working in groups, learners model the continuous destruction and creation of ozone (O3) molecules, which occur in the ozone layer. Some learners act as ultraviolet (UV) light and break apart...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes

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