? The team sent by Yongfeng Primary School consists of three teachers: Bao Xuefang, Yan Yan and Wang Shiliang. First of all, there is a lecture by teacher Bao Xuefang. She deeply explored and thought about the teaching materials, and explained the lecture contents from three parts: introducing "fast" and "interesting", reviewing "slow" and "thorough", and practicing "precise" and "lively".
? Professor Yan Yan, a post-90 s teacher, "the practice class of triangle inner angle sum" Teacher Yan leads students to experience constantly in solving problems and realize the surprise brought by mathematical thinking method, so that students can enjoy the joy of inquiry in lively mathematics classroom.
? Then our teacher, Mr. Wang Shiliang, made a wonderful comment from three sections: first, the taking and giving up of teaching; second, the advancing and retreating of teachers; and third, the gains and losses of students.
? Finally, Mr. Zheng, a mathematics researcher in the teaching and research section, made in-depth analysis and guidance, which brought us a wonderful lesson. Mr. Zheng skillfully uses students' independent exploration to understand the transformed mathematical ideas in specific situations, understands and masters various methods for calculating triangular figures, and can choose the most effective method to solve practical problems on the basis of comparison.
? Teaching is the art of language. It is not a performance, but a life interaction between students. The ideal classroom is not only to impart knowledge, but also to cultivate students' ability to speak mathematics. This activity has built a platform for teachers to show themselves, exchange and learn, and at the same time, it has greatly promoted the education and teaching level of teachers in the future.