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In this environmental science activity (page 3 of the PDF), leaners will identify and explain the causes of erosion.

Over $20 per group Ages 8 - 11 1 to 7 days
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In this activity about soil (page 7 of the PDF), learners will use their sense of touch as well as sight to understand how soil is classified based on texture and other details.

$5 - $10 per group Ages 8 - 11 4 to 24 hours
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In this outdoor archaeology activity, learners use mathematical skills and scientific inquiry to generate and process information from their own excavation site.

$10 - $20 per group Ages 11 - 18 1 to 7 days