在教学中,经常发现学生总在某些题目上出现问题,等讲评的时候发现其实是一类题目,稍微换了换问法或者条件,而学生却没看出来是以前教过的.而且,老师虽反复讲评却总是效果不佳.其实可以把这些题目总结成一道题目,通过挖掘题目的深意,加深学生的印象,培养学生思维的灵活性及应变能力. In teaching, students often find that there are always problems in some topics, such as when commenting that it is actually a type of topic, a little change in the method or conditions, and students did not see it is taught before. Moreover, Although the teacher repeatedly comment is always ineffective. In fact, these questions can be summed up as a topic, through the excavation of the profound meaning of the subject, to deepen the impression of students and develop students’ thinking flexibility and adaptability.