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In this design-based activity, learners explore environments, ecosystems, energy flow and organism interactions by creating a model biodome. Learners become engineers who create model ecosystems.

$10 - $20 per group Ages 11 - 14 4 to 24 hours
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Does yeast breathe? Find out by watching how plastic bags filled with yeast, warm water and different amounts of sugar change over time.

$1 - $5 per student Ages 6 - 14 45 to 60 minutes