概念教学是要帮助学生挖掘概念蕴涵的数学思想、方法。学生只有领悟了概念的真正内涵,才能谈得上利用它去灵活地解决问题。最近,笔者在一次教研活动中,观摩了一节“映射”新授课。授课者是一位老教师,教学经验丰富。大家听后,进行了评议。不过,笔者在听后受益匪浅的同时,却隐隐感到教学中有一点缺憾,比较隐蔽,不易为同行觉察,但尤为重要,故有必要与大家交流一下,以期引起大家的共鸣。 Concept teaching is to help students tap the concept of mathematical ideas, methods. Only when the student comprehends the true meaning of the concept can he talk about using it to solve the problem flexibly. Recently, in a teaching and research activities, I observed a section “mapping ” new lectures. The instructor is an old teacher, teaching experience. After listening, we made a comment. However, after hearing the book, I benefited a lot. At the same time, I felt that there was a little lack of teaching in my teaching. It was rather subtle and difficult for my colleagues to find out. However, it was even more important for me to communicate with you so as to arouse the sympathy of all of you.