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Learners discover the bubble power of living cells in this multi-hour experiment with baker's yeast. Learners make a living yeast/water solution in a bottle, and add table sugar to feed the yeast.

$1 - $5 per group Ages 6 - 14 4 to 24 hours
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In this experiment, learners will explore whether increased carbon dioxide makes our oceans more basic or more acidic.

$1 - $5 per student Ages 11 - 18 30 to 45 minutes