The teacher should find out all the twelve textbooks of primary school mathematics and review them after careful study. Especially those teachers who have never taught in grades one to six. Usually we divide the content of mathematical knowledge into "four fields"-number and algebra, shape and geometry, statistics and probability, and comprehensive practice. Every field includes many knowledge points. Therefore, teachers must carefully study the teaching materials before reviewing classes, and make clear the knowledge points to be sorted out in each review class. Some people compare our usual new teaching to "planting a living tree", while the review class teaching for graduating class is compared to "cultivating a good forest". It is easy to plant a tree alive, but it takes great effort to cultivate a forest.

In addition, in the general review, the sixth grade math teacher should strengthen communication, study how to attend each class, and sort out those knowledge points. Communicate the difficulties and solutions in class in time after class, which can not only ensure the review effect, but also promote the professional growth of teachers.