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最近,参加了一些数学课堂观摩活动,感慨于执教教师们扎实的教学基本功。他们在数学知识的形成、展开与升华过程,数学问题的分析与解决过程等方面,都显示出独到之处。下面是两位教师在《圆的面积》一课课堂小结部分的教学处理:【案例1】师同学们,通过这节课的学习,你有什么收获?生我知道了求圆面积的公式是S=πr2。生知道了圆的半径,就可以直接求出圆的面积。生知道了圆的直径,也可以先求出圆的半
Recently, I attended a number of mathematics classroom observation activities, feeling in teaching a solid teaching basic skills. They show their uniqueness in the formation, expansion and sublimation of mathematical knowledge, the analysis and solution of mathematical problems and so on. The following are two teachers in the “round area” class lesson summary teaching process: [Case 1] teacher students, through this lesson, what do you gain? I know the circular area formula S = πr2. Students know the radius of the circle, you can directly find the circle area. Students know the diameter of the circle, you can also find the circle of the first half