We are on the verge of a major revolution in the methods of learning. This revolution in the way the people learn will be based on the growing technology of the digital computer. As computers come to play a more pivotal role in society, emphasis will be placed on them in the educational process. We call the use of computers in the educational process Computer-Assisted Instruction (CAI). CAI consists of using the computer in lieu of the teacher to present the lesson. In the the sense that CAI allows for the replacement of a human by a machine, it has become an issue of considerable importance. The introduction of the computer as a learning and teaching device has created a number of advantages benefitting both student and teacher. One major advantage of computers is that they make learning an active process, where students play a constant thinking role. This contrasts with the passive learning environment of large lecture classes where students struggle to take notes. Another advantage of computers is that they allow for individualization. Each student working at a computer terminal has a unique interactive experience based on the student's past performances or other information. This allows students to learn at their own pace which is impossible in the lecture situation. They can review material at their own discretion and can be given remedial or more advanced material as appropriate. A third advantage is that the cost of computers is diminishing rapidly. It is estimated that for equivalent power, computers decrease in cost by about 30% each year. In recent - 1 - years the most dramatic decreases have occurred in computer memory. There are two reasons for this decrease. First, we are becoming more skillful in using the rapidly advancing technology in this area. New techniques are appearing frequently and many of these are successful. The second factor accounting for reduced costs is the mass production of components.[1] Along with the student, the teacher is also finding that the computer can be a useful tool in the instructional process. Traditionally, the role of the teacher includes conveying information to students through lecture and demonstration. Ordinarily, the professor will rely on the blackboard, verbal explanations, and prior computations to cover topics of importance. The advent of computers, especially those with on-line access, has made it possible to enrich such explanations by bringing the computer into the classroom. In subjects such as mathematics, engineering, and physics, where computations must be made and the results displayed, computers can prove to be of invaluable assistance. With computers, the instructor can use programs to describe procedures and to execute mathematical computations. The results of these computations will then be displayed on a cathode-ray-tube screen in front of the class. Because the computer can display the results of calculations immediately, the professor is able to demonstrate situations ---------- 1. Alfred M. Bork, Learning With Computers{Bedford, ________ ____ _________ Massachusetts: Digital Press, 1981},p. 2. - 2 - whose complexity would have caused them to be avoided previously.[2] There are three major categories of computer participation in the instructional process: performance uses, managemen