数学概念教学是学生掌握数学基础知识和基本技能的核心,新课程标准下的教材,对概念的描述、概括不再特别注重其表达形式,注重新课程标准强调的要“关注概念的实际背景与形成过程,帮助学生克服机械记忆的学习方式”。因此在数学概念的教学过程中既要在研究概念内涵与外延的基础上有意义的、探究的、情境的教学,更应在概念课的练习中注重应用数学概念解决问题的过程,通过正、反实例,变式 The teaching of mathematical concepts is the core of the students to master the basic knowledge of mathematics and basic skills, the teaching materials under the new curriculum standards, the description of the concepts, the general no longer pay special attention to its expression form, pay attention to the emphasis of the new curriculum standards “concerned about the actual background of the concept And the formation of the process to help students overcome the mechanical memory of learning. ” Therefore, in the teaching of mathematical concepts, it is necessary to make meaningful, inquiry and situational teaching based on the connotation and extension of the concept of the study. In the practice of the concept class, the process of applying mathematical concepts to solve the problem should be emphasized. Through positive, Anti-instance, variant