This guide is designed to help elementary classroom teachers develop the knowledge and skills necessary to bring process skills to the classroom. The text is presented in two parts. The first part covers the basic science skills which are intended for grades K-3. The basic skills are observing, inferring, measuring, communicating, classifying and predicting. The second part covers the integrated science process skills which are intended for grades 4-6. The integrated skills are identifying variables, constructing tables of data, constructing graphs, describing relationships between variables, aquiring and processing data, analyzing investigations, constructing hypotheses, operationally defining variables, designing investigations, and experimenting. Each science process is presented in one chapter. Each chapter begins with objectives that can be achieved by doing the activities included, and ends with a mastery test. (HM)