Because of their enormous memory banks, computers can be of great help in planning curriculum and instruction. After a teacher has determined the subject and objectives of a course unit, computers can retrieve a list of resources appropriate to the particular subject matter and to the students (e.g., materials, activities, teaching procedures, and evaluative criteria). These computer-based resource units are also helpful in individualizing instruction. The unique characteristics of computer-assisted planning may also be used to study many other aspects of learning, including teacher and student behavior and the determination of student needs. Complete examples of resource units are provided, as well as the results of some studies which examined the effects of computer-assisted planning on student behavior and on the decisions and instructional behavior of teachers. (JK/MT)