数学课程标准指出:“数学教学活动应努力使全体学生达到课程目标的基本要求,同时,要关注学生的个体差异,促进每个学生在原有基础上的发展。”面向全体,一是机会均等,应努力关注每一个学生,不让任何学生处于教师视野的死角内;二是差异发展,让每一个学生在各自原有的基础上得到尽可能大的发展。在数学教学中,全面发展从教学的起点来说,就是要面向学生已有的知识经验基础,基 Mathematical curriculum standards that: “Mathematics teaching activities should strive to enable all students to meet the basic requirements of the course objectives, at the same time, we must pay attention to individual differences in students and promote the development of each student on the basis of the original. ” For the whole, one is the opportunity Equal, we should strive to pay attention to each student, so as not to leave any student in the dead end of the teacher’s field of vision. Second, we should make a difference in development so that each student can get as large a development as possible on their own basis. In mathematics teaching, all-round development from the teaching starting point, it is necessary to face the students have the basis of knowledge and experience, based