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1992. William R. Wellnitz, Ph.D. This book is packed with activities that give children an opportunity to learn basic scientific principles with safe, inexpensive household materials. These easy-to-follow projects will teach young experimenters how to observe, measure, test new ideas, and draw logical conclusions. Included are experiments that show how to make an insect collection, observe animal behavior, grow plants, measure temperatures, test rain for acid, examine crystals and much more. 118 pages, soft cover, b&w illustrations.