《义务教育数学课程标准》明确要求学生成为学习的主体,教师应转变角色,成为组织者、引导者、合作者,要在课堂教学中允分发挥学生的主体地位,让学生自主地学习。 The standard of compulsory education mathematics curriculum clearly requires that students become the main body of study. Teachers should change their roles and become organizers, guides and collaborators. They should give full play to the students’ dominant position in class teaching and allow students to study independently.