Text, illustrations, and exercises are utilized in a set of six learning modules designed to instruct allied health services students and practitioners in necessary vocabulary skills and in selected job-related competencies. The first module, "Step into Medical Terminology" by Faye Ivor, teaches students to recognize the meaning of selected word roots, prefixes, and suffixes in medical terminology. The second module, by Barry Braverman, explains how to invent and use memory keys in the form of visual images that can help the student remember the meaning of common word roots in the medical vocabulary. The third module, by Charles Afflerbach, describes how to read and interpret grided scientific scales, such as thermometers, in the decimal system. The fourth module, by John Ferrara, examines the parts and use of the compound light microscope. The fifth module, by William J. Boykin, describes the parts of the stethoscope and details techniques and procedures for its use in auscultating the chest. The sixth module, by Bette Stanley, discusses the basic principles of the nature of light and examines the applications of those principles in photometry. Each of the illustrated modules outlines specific behavioral objectives, describes and illustrates procedures, provides sequential reinforcement exercises with immediate feedback, and concludes with a post-test and an accompanying answer key. The amount of time required to complete the modules varies from 20 to 30 minutes. (JP)