上学期参加教研活动,听了四位教师讲授的“椭圆(第一课时)”教学内容,感觉都非常重视椭圆定义的发生教学,各有各的风采和千秋,同行们在一起讨论也各有各的说法和评价,一时也没有一个定论,那么四位教师的不同设计到底谁的比较好呢?有没有一个相对的标准和视角? During the last semester, I participated in teaching and research activities and listened to the teaching contents of the elliptical (first class) teaching taught by four teachers. I feel that they all pay great attention to the teaching of the elliptical definition. Each has its own style and age, and colleagues discuss together. Each has its own arguments and evaluations, and there is no one conclusion at a time. So who is better for the different designs of the four teachers? Is there a relative standard and perspective?