《国家数学课程标准》指出,数学教学应该“向学生提供充分的从事数学活动和交流的机会,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和技能,数学思想和方法,获得广泛的数学活动经验。”只有课堂教学以学生为本,才能更好地发挥学生的学习主动性,为全方位参与创造条件,更好地满足每一名学生的学习心理需要,使学生良好的个性品质得到充分发展,更好地启迪思维,使学生的创新意识和能力得到 The National Mathematics Curriculum Standard states that mathematics teaching should “provide students with adequate opportunities to engage in math activities and exchanges to help them truly understand and master basic math knowledge and skills in their own exploration and cooperation and exchange of ideas. Mathematics Ideas and methods, access to a wide range of experience in math activities. ”Only the classroom teaching of student-oriented, in order to better play a student’s learning initiative, to create conditions for all-round participation and better meet each student’s learning psychology Need to enable students to fully develop the good personality, to better inspire thinking, so that students have the innovative awareness and ability to get