十年制中学教材中关于函数的极限这一单元的内容写得很简单,要求也不很高,对函数的极限这个概念,只作描述性的定义。函数的连续性也只简单地提一下。但是要使学生对这部分的内容有个比较明确的了解,却是教学上的一个难题。讲浅了,不明不白;讲深了,又超出教材要求。下面仅就函数的极限这个概念的教学,谈谈我的一点意见。 The content of the ten-year high school textbook on the limit of the function is very simple and the requirements are not very high. The concept of the limit of the function is only described descriptively. The continuity of the function is also only briefly mentioned. However, for students to have a clear understanding of this part of the content, it is a difficult problem in teaching. It was shallow and unclear; it was deep and went beyond the teaching materials. Let’s talk about my opinion on the teaching of the concept of the limit of function.