Teachers may be the most important influence on students' acquisition of problem- solving skills. Both the rate and quality of problem-solving attainment may be affected. Further, teachers probably contribute in a major way to pupils' enjoyment of problem solving and their desire to improve their current status. Research indicates that the teacher affects students' general mathematics achievement (see, for example. Grouws, 1980). It is indeed time that the teacher's role be given the attention it merits in problem-solving research.