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－５－４－３－２－１０１２３４５１、在概念教学中重视发生过程及层次性。数学概念是数学知识的细胞，是学生在学习数学中赖以思维的基础。清晰的概念是正确思维的前提，由于数学概念本身的复杂性、抽象性，学习时，可将其分为多个层次，先一层一层地认识，理解每一层次表达?
-5-4-3-2-10123451. Emphasis on the process and hierarchy in the concept teaching. The concept of mathematics is the cell of mathematics knowledge. It is the foundation of students’ thinking in learning mathematics. The clear concept is the premise of correct thinking. Because of the complexity and abstractness of the mathematical concept itself, when learning, it can be divided into multiple levels, and the understanding of each level should be understood first.