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    WGBH
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    In this engineering activity, learners will get acquainted with the basics of wind energy and power production by fabricating and testing various blade designs for table-top windmills constructed...

    Over $20 per group Ages 11 - 14 2 to 4 hours
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    WGBH
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    In this activity, learners investigate how geometry plays a role in perspective. The lesson begins with a demonstration, in which learners of the same height stand side by side near the end of a...

    1 cent - $1 per group Ages 8 - 18 45 to 60 minutes