笔者参加江苏省骨干教师培训,有幸听了“函数的单调性”(苏教版高中数学必修1)的两节课,由一位教学经验比较丰富骨干教师甲本班上课和外校的一位教师乙借班上课,两节课呈现出了不同的教学风格.下面笔者结合“函数的单调性”两节“同课异构”中一些教学细节的处理谈谈自己一些肤浅的认识和反思. The author participated in the training of key teachers in Jiangsu Province, fortunate enough to listen to the “monotony of functions” (Sujiao version of high school math compulsory 1) two classes, by a rich teaching experience of key teachers A class class and foreign school A teacher B class by lecture, two classes showed a different teaching style. The following author “monotony of the function ” two Superficial understanding and reflection.