大匠不为拙工改废绳墨,弈不为拙射变其彀率,君子引而不发,跃如也,中道而立,能者从之。——孟子当教师带着精心准备好的教案走进课堂时,是不是每一环节都必须依教案而行呢?我看大可不必。这是因为教学中师生双方不断产生交流,面对学生出乎意外 The great workman did not change the waste line for the worker, but he did not change his rate. - Mencius when teachers with well-prepared lesson plans into the classroom, is it right? Every step must be according to the case? I think no need. This is because the teachers and students in teaching constantly communicate with each other in the face of unexpected students