This study guide is a valuable resource for anyone interested in physical science. It includes material from the Science Spectrum Series, presented in CD-ROM format for ease of use. The guide is written in English and covers topics related to the subject of science, including the basics of physical science and important scientific concepts. The author, Beth Nelson, has done an excellent job presenting the material in a clear and concise manner. The publisher, Holt Rinehart Winston, is known for producing high-quality educational materials. This guide is a must-have for students and anyone interested in expanding their knowledge of physical science.