In the daily primary school mathematics teaching, I found that many teachers pay great attention to the teaching art of introducing new lessons, optimizing the teaching process and strengthening review, but pay little attention to the ending, and often just end the teaching in a monotonous form such as assigning homework and previewing the content of the next class. In fact, primary school mathematics teaching should not only pay attention to the beginning, highlight the center, but also pay attention to the art of ending, otherwise it can only be regarded as an anticlimactic teaching failure, at least not a very successful teaching class.

The author thinks that the teaching of mathematics in primary schools needs to pay attention to the ending art, which is determined by children's cognitive laws and physical and mental development characteristics, and it is also an urgent need to implement quality education at present. Children are fickle and have a short time to concentrate, so the last few minutes of a class are often the time when children are most tired, most distracted and have the worst learning effect. At this time, students often have no intention to listen to the unchanging homework, preview and other content, and some even feel extremely bored. After class, we often find some students quietly asking about their homework. And so on, all because the end of the class is too single and boring. On the contrary, if a novel, interesting and thought-provoking classroom ending can be carefully designed, it can not only consolidate new knowledge, adjust fatigue and maintain interest in learning, but also further stimulate children's desire to explore knowledge, activate their thinking, push classroom teaching to a new climax in a pleasant atmosphere, and continuously consolidate and improve teaching effects.

In many years of teaching practice, I tried to adopt the following ending methods and achieved good results.

First, summarize the preview style. This way of ending is the most commonly used by most educators. At the end of each class, in order to let students master the content of this class systematically, teachers should guide students to outline the learning content of this class in accurate and concise language, and summarize, summarize and summarize the key points, difficulties and key issues in teaching. This can give students a systematic and complete impression, help students to think, deepen their understanding and consolidate new knowledge, and also provide the foundation and motivation for students to invest in the next stage of learning with a good mental state. For example, after learning "Trapezoidal Understanding", we can summarize from the following aspects to help preview.