数学是思维的科学,概念是思维的细胞,教好概念是教好数学的内在要求。概念教学搞不好,数学课程目标的实现就失去了根基。然而,现实中不少教师对数学概念教学有名无实,许多教师甚至认为教概念不如多讲几道题目更“实惠”;更令人担心的是,有些教师不知如何教概念。学生也往往错误地认为,学概念就是背定义、记公式,既没有形成数学概念思维,也根本不理解数学思想。专门整理了一位省高中数学优质课一等奖教师的一节“正弦函数、余弦函数的性质”课堂教学实录,并作了一些评析。就数学概念教学引入发现、形成理解、深化掌握等方面有许多值得学习借鉴的地方,与大家一起分享探讨。 Mathematics is the science of thinking, and the concept is the cell of thinking. Teaching the concept is the inherent requirement of teaching mathematics. Concept teaching is not good, the realization of the goal of mathematics courses to lose the foundation. However, in practice, many teachers have no idea about the teaching of mathematical concepts. Many teachers even think that it is more “affordable” to teach concepts more than others. What is even more worrying is that some teachers do not know how to teach concepts. Students also often mistakenly believe that the concept of learning is to define the meaning of the back and remember the formula, neither to form the mathematical concept of thinking, but also did not understand the mathematical thinking. Specializes in a high school mathematics high school first prize teacher section “sine function, the nature of cosine function ” classroom teaching record, and made some comments. Introduction to the concept of mathematics teaching, the formation of understanding, deepening and so on there are many areas worth learning from, to share with you to explore.