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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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    Pratt School of Engineering, Duke University
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    Learners use engineering design principles to construct and test a fully solar-powered car. Solar car kits usually include a photovoltaic cell and motor; some include a chassis as well. Encourage...

    Over $20 per student Ages 11 - 14 2 to 4 hours
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    Pratt School of Engineering, Duke University
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    Learners determine the surface area and volume of two identical boxes, and then figure out the dimensions of a cubical box with the same volume. Then they construct a new, cube-shaped box from one...

    1 cent - $1 per student Ages 11 - 14 2 to 4 hours

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