数学知识间有着紧密的内在联系，每一部分知识既是旧知识的发展，又是新知识的基础，遵循儿童的认知规律，引导学生运用知识的迁移规律探索新知，是数学教学常用的方法。教师要注意挖掘教材中知识的内在联系，把握这种内在联系所构成的数学结构，充分发挥其整体功能，让学... There is a close relationship between mathematical knowledge. Each part of knowledge is not only the development of old knowledge, but also the foundation of new knowledge. Following the cognitive rules of children and guiding students to explore new knowledge by using the law of knowledge transfer are common methods in mathematics teaching. Teachers should pay attention to digging the internal connection of knowledge in teaching materials, grasp the mathematical structure formed by this internal connection, give full play to its overall function, and let the students learn ...