The process used in the design and evaluation of modules of instruction with the PLATO IV Computer System for stimulus display and response recording is described. Steps in the instructional design process are listed as problem identification and task analysis, identification of entry characteristics, development of performance objectives, development of evaluation instruments, determination of instructional sequence, design of instructional components, and production of instructional materials. Evaluation is discussed in terms of product, evaluation, process evaluation, and system effectiveness. (SK)