“平面直角坐标系中的圆”这类问题,在历年中考题中,属于综合性强、难度较大的问题,本文尝试重点从丰富学生数学活动经验和渗透数学思想方法这两个方面进行教学设计,提高学生解此类问题的能力.数学的“基本活动经验”是:个体在亲历数学活动过程中所获得的关于数学活动的个性化经验.个体形成专属于自己的数学活动经验必须经历获取经验和组织经验两大活动过程.而帮助学生形成数学活动经验的有效教学途径是让学生不断经历各种数学活动过程.在“做数学”的过程中获取经验常常是一种 The problem of “circle in plane Cartesian coordinate system” is a comprehensive and difficult problem in the examination questions over the years. This paper attempts to focus on the following aspects: enriching students’ mathematical activity experience and penetrating mathematical thinking methods Teaching design, improve students ability to solve such problems.Mathematics “basic experience ” is: individual experience in mathematics activities obtained during the individual experience of mathematical activities.An individual to form their own mathematical activities Experience must go through both the process of acquiring experience and organizing experience.An effective teaching method to help students to form the experience of mathematics activities is to let the students go through various mathematical activities constantly.The experience in the process of doing mathematics is often one Species