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    In this activity, learners create an electrical circuit and investigate how some dissolved substances conduct electricity. Use this activity to explain how the nervous system sends messages as...

    $10 - $20 per group Ages 11 - 14 45 to 60 minutes
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    In this chemistry activity (page 8 of the PDF), learners will identify the instances of physical change, chemical change, and solutions while making homemade soda pop. They will watch as yeast in...

    $10 - $20 per group Ages 8 - 14 1 to 7 days

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