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This is a comprehensive lesson plan on page 85 for a group cleanup trip to a local beach, lake or stream. Learners keep track of the types and amounts of trash picked up and analyze this information.

$5 - $10 per group Ages 14 - 18 1 to 7 days
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In this activity, learners will simulate the processes of the water cycle at home in a plastic sandwich bag.

$1 - $5 per group Ages 4 - 11 1 to 7 days