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In this activity, learners investigate the process of osmosis by adding salt to a sealed bag of raw carrots and comparing it to a control.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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This activity (on page 2 of the PDF under SciGirls Activity: Forensics) is a full inquiry investigation into how hairs from a crime scene are matched to suspects.

Over $20 per group Ages 8 - 14 1 to 2 hours