新课程标准对课堂教学提出了很高的要求,以典型题目为素材,组织指导学生开展探究式教学,可大大激发学生的探究热情,笔者在一堂解析几何复习课中,用两道典型题目进行探究式教学,现整理如下:问题1设点P(4,2)是圆C:x2+y2-24x-28y-36=0内的一个定点,圆上的动点A、B满足∠APB=90°, The new curriculum standards put a high requirement on classroom teaching. Using typical topics as materials, and organizing and guiding students to carry out inquiry teaching can greatly stimulate students’ enthusiasm for inquiry. In the course of analytical geometry review, the author conducted two typical topics. The inquiry teaching is now organized as follows: Question 1 The point P (4,2) is a fixed point within the circle C:x2+y2-24x-28y-36=0. The points A and B on the circle satisfy the ∠APB= 90°,