某教师教学《圆的面积》的方法是——首先提问:“你们已学会计算哪些图形的面积了?”学生答完,教师指着黑板上画的一个圆问:“那么,圆的面积怎样计算呢?”(以此导入新课,并板书课题“圆的面积”)不等学生回答,教师接着说:“其实,圆的面积计算方法并不难,你们看一看课本就会了。” The way a teacher teaches a “round area” is - first ask: “Have you learned to figure out what areas of a graph?” After the student answered, the teacher pointed to a circle drawn on a blackboard asking: “So how about the area of ​​a circle Calculated? ”(In order to import the new lesson, and the blackboard topic“ circle area ”) ranging from the students to answer, the teacher went on to say:“ In fact, the circle area calculation is not difficult, you look at the textbook will be. ”