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    WGBH
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    In this activity, learners mix up a bubbly brew and examine density. Learners explore how they can make different materials fall and rise in water using oil, water, and salt. Learners can...

    $1 - $5 per student Ages 6 - 11 5 to 10 minutes
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    WGBH
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    In this activity, learners mix water, cooking oil, and liquid food coloring to create beautiful colored designs in a cup. Use this activity to explore liquid density and solubility. <b>...

    $1 - $5 per student Ages 6 - 11 5 to 10 minutes
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    American Chemical Society
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    In this activity on page 4 of the PDF, explore the unique molecular structure and conductive nature of graphene. Learners construct a circuit with a battery and LED bulb. Then, they examine what...

    $10 - $20 per student Ages 8 - 14 5 to 10 minutes
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    WGBH
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    In this activity, learners make a foam packing peanut "flink"--neither float away nor sink--in water. Learners experiment with materials to make a Flinker that "flinks" for 10...

    1 cent - $1 per student Ages 6 - 11 5 to 10 minutes
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    WGBH
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    In this activity, learners make plates levitate! Learners build "hovercrafts" using simple materials to explore friction and motion. <b>[Activity is publicly available through a web...

    $1 - $5 per student Ages 6 - 11 5 to 10 minutes
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    WGBH
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    In this activity, learners use mirrors to write secret messages to a friend. Use this activity to explore letters, optics, and/or symmetry.

    1 cent - $1 per student Ages 6 - 11 5 to 10 minutes
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    WGBH
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    In this activity, learners make an optical illusion toy from the 1800s to explore persistence of vision. When you spin the Thaumatrope, the pictures move so quickly that your eyes and brain can&...

    $1 - $5 per student Ages 6 - 11 5 to 10 minutes
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    NISE Network
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    This is an activity in which learners will find that they can detect differences in concentration better with their nose (smelling) than with their eyes (seeing). Our sense of smell allows us to...

    $5 - $10 per group Ages 4 - adult 5 to 10 minutes
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    American Chemical Society
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    In this simple activity, learners see the production of a gas, which visibly fills up a balloon placed over the neck of a bottle. Inside the bottle, water and an effervescent antacid tablet are...

    1 cent - $1 per student Ages 6 - 14 5 to 10 minutes
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    NISE Network
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    In this nanoscience activity, learners discover that it's easy to pour water out of a regular-sized cup, but not out of a miniature cup. They learn that size can affect the way materials like...

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

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