教学内容江苏教育出版社义务教育课程标准实验教科书《数学》第十册104-105页。教学目标通过让学生动手操作,逐步感悟“极限”的数学思想和方法,并以此为基础找到圆的面积的计算公式。 Teaching content Jiangsu Education Publishing House compulsory education curriculum standard experimental textbook “Mathematics” tenth volumes 104-105 pages. Teaching Objectives Through the hands-on operation of students, and gradually understand the “limit ” mathematical ideas and methods, and based on this to find the formula of the area of ​​the circle.