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Learners mix vinegar and baking soda together in a bottle to create a chemical reaction. The reaction produces a gas, carbon dioxide, which inflates a balloon attached to the mouth of the bottle.

$1 - $5 per student Ages 6 - 14 Under 5 minutes
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In this simulation activity, learners act as parts of the circulatory system and discover how it serves as a transport system for food/nutrients, oxygen, carbon dioxide and waste.

$1 - $5 per group Ages 11 - 14 10 to 30 minutes