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

In this activity, learners will discover what colors are in different markers, and may be surprised at the results.

Learners design their own experiment to investigate how pollution diffuses through ground material.

In this crafty chemistry activity (on page 2 of the PDF), learners make their own paper from used paper they may have otherwise thrown away.