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In this activity (page 1 of the PDF under SciGirls Activity: Bogs), learners will test cups full of potting soil, sand, and sphagnum moss to see which earth material is able to soak up the most water.

Learners make their own paper. They start by shredding old newspaper, clean toilet paper, and clean paper towels.

Learners build a filter from old soda bottles and dirt. They create polluted water, and pour it through their filter to clean it.