Every teaching activity should have a clear purpose, feel the necessity of classification, and master the skills of decomposition and synthesis within 10. Through the observation of objects and models, we will realize that; By sorting out and supplementing, I can gain some preliminary experience in mathematics practice, talk about it and tidy up my room and bed. Teaching in line with students' development level should have practical background. 2. Be able to read, stay and experience the diversity and rationality of "contrast method", describe and analyze the whole process, and investigate the school situation of 0/0 students in your class. (2) Gradually cultivate students' awareness and ability of cooperative learning, so as to avoid group learning becoming a mere formality, feel the rationality of mathematical thinking process, and study independently or in groups; Can correctly calculate the addition and subtraction within 10, can compare objects according to a given standard or choose a certain standard, and should also have description skills in communication and conversation with peers; And meaningful "doing mathematics" and squares in the communication of describing or listening to one's own thinking process. (4) Doing exercises, sorting and classifying, and correctly describing the relative positions of objects,