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In this activity, learners examine the different materials gardeners add to their soil, and discuss how these materials are important for plant growth.

Over $20 per student Ages 11 - 14 45 to 60 minutes
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In this activity with several mini experiments, learners explore the chemistry that helps scientists learn about the environment and how they can help save it.

$1 - $5 per group Ages 8 - 14 4 to 24 hours