概念教学要帮助学生形成对概念内涵的丰富认识,形成比较和分类、分析与综合、概括与抽象的能力,提升准确、简练和严密的数学语言的表述水平,感悟数学思想方法。因此,要关注学生的参与和体验,提供典型多样的学习材料,给予充分的交流和表述的机会。 Concept teaching should help students to form a rich understanding of the concept of connotation, the formation of the ability to compare and classification, analysis and synthesis, abstraction and abstraction, improve accurate, concise and rigorous mathematical language expression level, sentiment mathematical thinking and methods. Therefore, we should pay attention to the participation and experience of students, provide typical and diverse learning materials, and give full opportunities for communication and expression.