《义务教育数学课程标准》指出:通过学习使学生有所发展,提高课堂教学的有效性。所谓的课堂教学效率是指通过数学课堂教学活动,学生能够在单位有限时间完成教学任务,并且达到更高的教学效果,使他们掌握应该认知的内容,发展学生的能力。如何提高课堂教学效率成为广大教师研究的主要问题,它是衡量教学的最终标准。 “Compulsory education mathematics curriculum standards” that: through learning to enable students to develop, improve the effectiveness of classroom teaching. The so-called classroom teaching efficiency means that through the mathematics classroom teaching activities, students can complete their teaching tasks within a limited time and achieve higher teaching effects so that they can grasp what they should know and develop their abilities. How to improve the efficiency of classroom teaching has become the main problem of the majority of teachers, it is the ultimate measure of teaching standards.