Nature Science Experiments

Gr 4—6—The first chapter of this attractive book, "The Stuff of Life," jumps right in by outlining the materials needed and the step-by-step process to follow to collect and isolate DNA by rinsing one's mouth out with salt water. (Pronunciation guides and definitions would be useful here for such terms as "mitochondria" and "double helix.") The book does not have to be read or used in a linear fashion. Youngsters can turn to the table of contents or detailed index to choose experiments based on interest and availability of resources. For example, microscopes are needed for the dust mite and one-celled life experiments, but a shoebox and wax paper will do for an experiment with worms. Some definitions are provided within the text when a term is introduced and others appear in small boxes. The chapters on bacteria and protists include color photomicrographs of the organisms, and amusing cartoon illustrations appear throughout. This exploration of the natural world will spark readers' interest in experimenting and questioning results.—Frances E. Millhouser, formerly at Chantilly Regional Library, Fairfax County, VA