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In this activity, learners hook up a hair to a lever system and create a hair hygrometer to measure changes in humidity.

$1 - $5 per group Ages 8 - 18 45 to 60 minutes
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In this quick activity (on page 2 of the PDF under GPS: Body Electricity Activity), learners will observe how dry breakfast cereal appears to dance when it gets close to a balloon charged with static

1 cent - $1 per group Ages 8 - 14 10 to 30 minutes