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In this experiment using sprigs of Elodea, learners will observe a natural process that removes carbon dioxide (CO2) from Earth's atmosphere.

$10 - $20 per group Ages 11 - 14 1 to 2 hours

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This activity has three story puzzles learners can solve to learn about life in the Arctic.

1 cent - $1 per student Ages 4 - 8 30 to 45 minutes