The manual is for use by students learning electrical discharge machining (EDM). It consists of eight units divided into several lessons, each designed to meet one of the stated objectives for the unit. The units deal with: introduction to and advantages of EDM, the EDM process, basic components of EDM, reaction between forming tool and workpiece, operating procedures, setup methods, flushing methods, and machining parameters. Each lesson contains: (1) a statement of the objective, (2) detailed, illustrated information on one aspect of EDM, (3) vocabulary words (56 total, defined in the manual), and (4) a written theoretical or a practical assignment to check comprehension. An achievement test consisting of several questions is included for each unit. The manual also contains a three-item bibliography. (MS)