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    Twin Cities Public Television
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    This activity (on page 2 of the PDF) is a full inquiry investigation into sound. Groups of learners will use a decibel meter or a simple set of benchmark sounds to record and quantify sound levels...

    Over $20 per group Ages 8 - 14 2 to 4 hours
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    Pratt School of Engineering, Duke University
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    Each learner chews a piece of gum until it loses its flavor, and then leaves the gum to dry for several days. By weighing the gum before and after chewing, they can determine the amount of mass...

    $1 - $5 per group Ages 11 - 14 2 to 4 hours
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    Science Museum of Minnesota
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    This activity requires a Pico Cricket (tiny computer). Learners work on designing and building a sound sensor out of household materials, like plastic wrap and cardboard. This will connect with the...

    Over $20 per group Ages 8 - 18 2 to 4 hours
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    Biotechnology and Biological Sciences Research Council
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    In this activity (p.25 of PDF), learners investigate spores. Mushrooms produce millions of spores which are equivalent to the seeds of plants but without the massive food reserves. Spores are so...

    1 cent - $1 per student Ages 11 - 14 2 to 4 hours
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    University of Washington
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    In this activity, learners investigate the olfactory system by conducting several experiments. In "CLASS EXPERIMENT," learners find that the ability to detect an odor decreases with...

    $5 - $10 per group Ages 11 - 14 2 to 4 hours
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    Twin Cities Public Television
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    This activity (on page 2 of the PDF) is a full inquiry investigation into dogs' ability (or inability) to see color. Learners conduct an experiment by first performing a control test and then...

    $10 - $20 per group Ages 8 - 14 2 to 4 hours
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    IEEE
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    In this activity, learners explore how engineers use scales and measures when designing a manufacturing process to ensure that final products are uniform in weight or count. Learners explore...

    $1 - $5 per group Ages 11 - 18 2 to 4 hours
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    Lawrence Hall of Science
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    This warm weather activity introduces learners to the impact trees have on blocking the sun's heat and reducing temperature on the Earth's surface. Learners set containers with water in a...

    1 cent - $1 per student Ages 4 - 14 2 to 4 hours
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    California Academy of Sciences
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    In this activity, learners visualize the differences in water density and relate this to the potential consequences of increased glacial melting. This activity can be conducted as a demonstration...

    $5 - $10 per group Ages 8 - 14 2 to 4 hours
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    NASA
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    Through a series of simple body movements, learners gain insight into the relationship between time and astronomical motions of Earth (rotation about its axis, and orbit around the Sun), and also...

    $5 - $10 per group Ages 11 - adult 2 to 4 hours

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