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    In this engineering activity, learners examine bicycle mechanics and gear ratios. Learners determine which gears will help them bike a set course in the shortest amount of time.

    1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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    In this quick activity (page 1 of PDF), learners will use the ever-popular soda geyser experiment to test the reactivity of the various sugar candies or mints. The goal is to set off the highest...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    This activity (on page 3 of the PDF) is a full inquiry investigation into how "bounciness" relates to the distance a ball will fly when hit off a batting tee. Groups of learners will...

    $5 - $10 per group Ages 8 - 14 1 to 2 hours
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    This activity (page 2 of the PDF) is a full inquiry investigation into how ordinary things behave in microgravity, similar to what astronauts experience. Groups of learners will prepare a large...

    Over $20 per group Ages 8 - 14 2 to 4 hours
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    In this activity (page 1 of the PDF), learners will stand twelve feet apart swinging a rope at the slowest tempo possible while someone uses a stopwatch to record the number of twirls per minute....

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    This activity is a full inquiry investigation into g-force and acceleration. Groups of learners will construct their own accelerometers. Then, with permission from their local amusement park, they...

    $5 - $10 per student Ages 8 - 14 1 to 7 days
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    This activity (on page 2 of the PDF) is a full inquiry investigation into tug-of-war physics. Groups of learners will test two tug-of-war strategies. Which is better: a team of a few big kids or...

    $10 - $20 per group Ages 8 - 14 2 to 4 hours
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    This activity (on page 2 of the PDF) is a full inquiry investigation into transfer of motion. Groups of learners will measure the length and circumference of their kicking legs and then takes turns...

    $5 - $10 per group Ages 8 - 14 45 to 60 minutes
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    This activity (on page 2 of the PDF) is a full inquiry investigation into the engineering challenges of sending scientific sensors into space. Groups of learners will develop sensors to be deployed...

    Over $20 per group Ages 8 - 14 1 to 7 days
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    In this activity (on page 1 of the PDF), learners will investigate the transfer of energy using sports equipment. Learners first measure how high different kinds of balls bounce compared to their...

    free Ages 8 - 14 30 to 45 minutes

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