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Filled with classroom activities and student project ideas related to this amazing hydrophilic polymer, this book is an excellent teacher resource! Growing, measuring, graphing, and absorbing are all terms used to relate to the growing spheres, or warblettes, a term coined by the author. Students will be fascinated, using the spheres as magnifying lenses or to calculate the absorption rate of household liquids. 40 pages, copyright 2008.
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