在平时的教学中由于多种原因和错误的导向，往往会有意无意地忽视了差生在班级里的作用，使两极分化现象越来越明显，不但影响了课堂教学的效果，而且还影响了班集体学习兴趣的稳定，从而将教师自己与学生卷入教学的误区。误区之一：对学生的基本素质估计不足，不能抓住重点， In the usual teaching, due to various reasons and wrong orientation, the role of poor students in the class is often consciously or unintentionally ignored, making polarization more and more obvious. This not only affects the effect of classroom teaching, but also affects classes. The stability of collective learning interests has led to the involvement of teachers themselves and students in teaching errors. One of the myths: We don’t have enough estimates of the basic qualities of students and can’t catch the focus.