This focus on problem solving is a shift from how it is treated in traditional mathematics classrooms and conceptualized by teachers whose knowledge of it is based on experiences in such classrooms as students of mathematics. This makes it a challenge for such teachers to engage students in genuine problem solving, that is solving a task for which the solution method is not predetermined. This justifies the importance of ongoing research to identify ways to work with teachers to help them to transform their thinking and teaching of problem solving to meaningfully support students'learning of it and mathematics. This study contributes to this by exploring two"self-study of personal experience" approaches to determine their effectiveness in helping prospective teachers to develop problem-solving knowledge for teaching.