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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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    PBS
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    In this math lesson, learners predict, interpret, and sketch graphs of functions related to the shapes of bottles. A measure of water is poured into a container. Learners graph this as an ordered...

    1 cent - $1 per group Ages 11 - 14 45 to 60 minutes
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    COSI
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    In this playful physics activity (page eight of the pdf), learners use toy cars to explore how speed and weight affect the results of collision. Designed as a pre- or post-visit lesson in...

    1 cent - $1 per group Ages 8 - 11 10 to 30 minutes
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    Twin Cities Public Television
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    In this engineering activity, learners design parachutes to give toy figures safe landings. This activity is great for practicing an important STEM skill--changing only one variable at a time.

    $5 - $10 per group Ages 8 - 14 30 to 45 minutes
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    American Physical Society
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    Learners build a pendulum from a yo-yo, and then design their own experiment to determine what affects the pendulum's period of swing. They can alter the mass of the yo-yo by adding play dough...

    $1 - $5 per group Ages 11 - 14 45 to 60 minutes
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    Utah Education Network
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    In this math lesson, learners explore variables and their uses. Learners pretend to be FBI agents and make a TOP SECRET tool that enables them to decode and find the values of hidden messages and...

    1 cent - $1 per student Ages 8 - 11 10 to 30 minutes
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    University of Utah
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    What is the optimal environment for hatching brine shrimp? Using a scaffold, learners design and conduct experiments testing the effect of a single abiotic factor on brine shrimp cyst hatch rate....

    Over $20 per group Ages 11 - 18 1 to 7 days
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    Pratt School of Engineering, Duke University
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    Learners initially test to see how many drops of liquid (water, rubbing alcohol, and vegetable oil) can fit on a penny. They then generate their own hypotheses to explain the results and design...

    $1 - $5 per group Ages 11 - 14 10 to 30 minutes
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    NSBRI
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    In this activity (page 26 of the PDF), learners make observations, formulate hypotheses and design a controlled experiment, based on the reaction of carbon dioxide with calcium hydroxide. This is...

    $5 - $10 per group Ages 8 - 18 1 to 7 days
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    Children's Museum Of Houston
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    In this activity, learners conduct a controlled experiment to examine how many Mentos are needed to make the tallest possible soda geyser. Will the greatest number of Mentos yield the tallest soda...

    Over $20 per group Ages 8 - 18 1 to 2 hours

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