《普通高中数学课程标准》指出:“高中数学课程应该返璞归真,努力揭示数学概念、法则、结论的发展过程和本质。”因而,数学概念的教学是值得我们每个数学教师深入研究的问题。一些学生数学之所以差,最直接的原因往往是概念不清。正确理解概念是掌握数学基础知识的前提,是学好数学定理、公式和掌握好数学方法,提高解题能力的基础。数学教学的长期实践经 The “Standard Mathematics Curriculum Standard for Senior High School” states: “The high school mathematics curriculum should be back to basics, and strive to unveil the development process and essence of mathematical concepts, rules and conclusions.” Thus, the teaching of mathematical concepts is something that every mathematical teacher should study in-depth . The reason why some students are poor math, the most direct reason is often unclear concept. Correct understanding of the concept of mathematics is the basic knowledge of the premise, is to learn mathematical theorems, formulas and master mathematical methods to improve the ability to solve problems. Long-term practice of mathematics teaching