新课程强调数学教学要以生为本,根据这一理念,数学教师要找准学生的现实起点并顺着学生的思路来组织教学,才能提高教学的针对性和有效性。但在教学实践中,许多教师的做法却违背了学生数学认知的本真规律,他们不顾学生学习数学的真实需求,不去了解学生学习的现实起点,采取以教师为中心的机械教学,强迫学生按照教师死板的“路线”走。经常这样做,学生会与主动建构学习的真实状态渐行渐远,会成为被动学习的工具,教 The new curriculum emphasizes that mathematics teaching should give birth to students. According to this idea, mathematics teachers should find out the realistic starting point of students and organize their teaching according to the students' thinking so as to improve the pertinence and effectiveness of teaching. However, in teaching practice, many teachers violate the true laws of students 'cognition of mathematics. Regardless of students' actual needs of learning mathematics, they do not understand the realistic starting point of student learning, adopt teacher-centered mechanical teaching and force Students follow the teacher's rigid “route ” go. Often doing so, students will take the initiative to construct the real state of learning lopsided, will become a passive learning tool to teach