Providing instructions for a variety of experiments that use materials from around the house, this well-written book examines the effects of forces on bodies or fluids at rest or in motion. Each experiment begins with "your challenge" and a list of what "you need." The "do this" section includes step-by-step instructions accompanied by frequent illustrations by Bill Wright. Each experiment then concludes with a "What happened?" section that explains the scientific principles involved and a "Guess what?" part that contains interesting facts and applications to the real world. The writing and the projects are geared to kids; only occasional adult help is required. The projects would be great for a rainy day at home or serve well as a supplement to a school science program.