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    Twin Cities Public Television
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    In this activity (on page 2 of the PDF), learners will construct a model hovercraft out of an empty spool and a piece of cardboard. A balloon provides the air pressure through the spool and a hole...

    1 cent - $1 per student Ages 8 - 14 45 to 60 minutes
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    Science Museum of Minnesota
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    Create airplanes from straws and geometric shapes. Test them out to see how far they can fly, or how accurately they can be aimed. All you need is a straw, two strips of paper, and some tape to...

    1 cent - $1 per student Ages 4 - 14 30 to 45 minutes