Focusing primarily on student cognitive processes, this second yearbook of the Finnish Association of Mathematics and Science Education Research contains five articles and a thesis summary on mathematics teaching and learning. Areas of investigation include: (1) learning styles and strategies; (2) processes and strategies in solving elementary verbal multiplication and division tasks; (3) use of a microcomputer as an educational tool and research instrument; (4) position of applications in junior secondary school mathematics teaching; (5) development of geometric thinking; and (6) development of a concept of number. Biographical notes of the contributing authors are also included. (ML)