Some ways computers are used in classrooms today and their potential as a tool to enhance instruction are explored. Considered are graphics, lesson planning, test preparation, drill and practice, remedial work, demonstrations, simulations, and introduction to programming. (MNS)

Advantages and disadvantages of common ways to justify the answer to a probability problem are discussed. One explanation appears superior to the others because it is easy to understand, mathematically rigorous, generalizes to a broader class of problems, and avoids the deficiencies of the other explanations. (MNS)

The suggested program is designed for mathematics teachers. It concerns the solution of systems of linear equations, but it does not complete the job on its own. The user is the solver while the computer is merely a computing assistant. (MNS)