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Crank It Up

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In this engineering activity, learners explore simple machines and then build cardboard automata using cams.
$5 - $10 per group Ages 8 - 14 2 to 4 hours

Music and Sound

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This activity (on page 2 of the PDF under SciGirls Activity: Music and Sound) is a full inquiry investigation into sound frequency.
$5 - $10 per group Ages 8 - 14 1 to 2 hours