As Takahashi (2006) puts it, “Because the goal of the structured problemsolving
approach is to develop students’ understanding of mathematical concepts
and skills, a teacher is expected to facilitate mathematical discussion for students
to achieve this goal” (p. 6). The term neriage, used for this discussion part of the
lesson, indicates a kneading of student ideas, allowing them to compare, polish
and refine these solutions through the teacher’s orchestration and probing.
whole class discussion that follows the students’ working time – the neriage phase
of the lesson, which often occupies the majority of time in a research lesson.