一、教材分析本教学内容主要任务是帮助学生如何确定圆的条件,熟练掌握三点确定一个圆的条件是不在统一直线上的三点。学生需要在课堂中将概念掌握,并且通过习题进行巩固。对于一个过定点的圆已知它的圆心,那么半径也就定下来了,因此这个过一点作圆的问题可以转化成确定圆心的问题。二、设计理念课堂要围绕学生进行,课堂是学生的课堂学生在课堂中是学习知识的。因此,设计的时候围绕着学生出发,采用讨论与交流将学生的思绪带到课堂中,并且在课堂中将学生自 First, the textbook analysis The main task of this teaching content is to help students determine the conditions of the circle, master three points to determine the conditions of a circle is not in a unified line of three. Students need to grasp the concepts in the classroom and consolidate them through exercises. For a given point of a circle whose center is known, then the radius is fixed, so that this over-circular problem can be transformed into the problem of determining the center of a circle. Second, the design concept of the classroom to be carried out around the students, the classroom is the student classroom students in the classroom is to learn knowledge. Therefore, the design time revolves around students, using the discussion and exchange of students’ thoughts into the classroom, and students in the classroom since