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Learners will build a lung model to understand how their lungs and diaphragm work to make them breathe.

$1 - $5 per group Ages 8 - 18 30 to 45 minutes
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This quiz lets you estimate your annual radiation exposure.

free Ages 8 - 18 10 to 30 minutes
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In this environmental science lesson, learners will examine hazardous chemicals and their effects on human health and the environment.

1 cent - $1 per group Ages 14 - 18 1 to 2 hours