One of the strengths of the Pennsylvania Council of Teachers of Mathematics (PCTM) is that it gives mathematicians and mathematics educators the opportunity to exchange and contribute to each other's professional growth. The topic for this 1985 yearbook, the first of a proposed ongoing series, has been chosen to coincide with the annual PCTM meeting. This yearbook contains 10 articles related to calculators, computers, and problem solving. Discussions include: (1) using computers in problem solving; (2) using LOGO; (3) using computers with the intermediate grades for problem solving; (4) heuristic approaches in using computers; (5) calculators in the classroom; (6) number operations; (7) math anxiety; (8) mathematics achievement in Pennsylvania; (9) the participation of women in computers and mathematics; and (10) classroom applications. (CW)