《数学课程标准》倡导:“教师应激发学生的学习积极性,让学生提供充分从事数学活动的机会,帮助他们在自主探索和合作交流的过程中真正理解和掌握基本的数学知识与技能、数学思想和方法,获得广泛的数学活动经验.学生是数学学习的主人,教师是数学学习的组织者、引导者和合作者.”新课程呼唤教师必须给学生创设有效探究数学的“支 The standard of mathematics curriculum advocates: ”Teachers should arouse the enthusiasm of students to provide students with the opportunity to fully engage in mathematical activities to help them truly understand and master basic maths knowledge and skills in their own exploration and cooperation and exchange of ideas. Mathematics Ideas and methods, gaining a wide range of experience in math activities. Students are the masters of mathematics learning, teachers are the organizers, guides and collaborators of mathematics learning. “” The new curriculum calls for teachers to create “”