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In this fascinating and fun experiment, learners use chemistry to identify a mystery powder and to solve a "crime," a process similar to that used by real forensic scientists.

This activity allows learners to explore the scientific method in an open-ended fashion, using the 4-P Approach to Science Inquiry developed by the University of Wisconsin, Beloit.

In this math lesson, learners apply the concepts of ratio and proportion to the capture-recapture statistical procedure.

In this experiment, learners will conduct chemical and physical tests to identify mystery substances.

In this activity, learners discover that sand is the major ingredient in glass.

In this activity on page 7 of the PDF (Water in Our World), learners make their own water treatment systems for cleaning water.