新课程改革的核心环节是课程实施,基本途径是课堂教学.课堂作为课改的主战场是师生知识交流、思想碰撞的前沿阵地,是学生知识结构重建与升华、形成数学思想方法的最佳时机,是教师专业成长、教学理论水平提高、指导数学教学改革、推进数学新课程实施的最佳平台.教师不能只满足于上课备课、作业批改,而应该常常在实践——反思——再实践——再反思的循环过程中反思自己的教育教学行为. The core of the new curriculum reform is the implementation of the curriculum, the basic approach is classroom teaching.Classroom as the main battlefield for curriculum reform is the forefront of knowledge exchange, ideological collision between teachers and students, is the best way to rebuild and sublimate students’ knowledge structure and form the mathematical way of thinking The opportunity is the best platform for the teachers to grow professionally, raise the theoretical level of teaching, guide the reform of mathematics teaching, and promote the implementation of the new mathematics curriculum. Teachers should not only be satisfied with class preparation and homework revisions, but should often practice - reflection - practice Rethinking Our Own Education and Teaching Behavior in the Retrospective Cycle.