高中数学新课程标准倡导培养学生“积极主动、勇于探索的学习方式.”暴露知识的形成过程、暴露对问题的思维过程,注重对知识发生、发展过程的体验,让学生亲身追求知识的生成轨迹,领悟对问题的探究方法与思路,有助于培养学生数学学习的兴趣,让学生形成主动探究的良好习惯.课本例 New high school mathematics curriculum standards advocate the students to be “proactive and courageous to explore ways of learning.” Exposure of the formation of the process of knowledge, exposed the thinking process of the problem, pay attention to knowledge, the development process of experience, so that students personally pursuit of knowledge generation trajectory , Comprehend the method and train of thought to the question, help to cultivate students’ interest in maths learning and let them form the good habit of proactive inquiry.