Mathematics teachers talk about, write about, and act upon, many different ideas under
the heading of problem solving. Some have in mind primarily the selection and
presentation of "good" problems to students. Some think of mathematics program goals
in which the curriculum is structured around problem content. Others think of program
goals in which the strategies and techniques of problem solving are emphasized. Some
discuss mathematics problem solving in the context of a method of teaching, i.e., a
problem approach. Indeed, discussions of mathematics problem solving often combine
and blend several of these ideas.