《数学课程标准》(实验)强调指出:学习数学是一种“多元”的智能活动,动手、动脑、数学试验、合作交流等均是数学能力发展的不可或缺的重要方式.目前以“动手实践、自主探究、合作交流”为特征的学习方式带来了一场真正意义上的教学观念和方法的深刻变革,成为数学课堂改革的一 “Mathematics Curriculum Standards” (experiment) emphasizes that learning mathematics is a kind of “diversity” of intelligent activities. Hands-on, brain-braining, mathematical experiments, and cooperation and exchange are all indispensable and important ways for the development of mathematics ability. “Practice, self-inquiry, and cooperation and communication” have brought about a profound change in the teaching concepts and methods in the true sense of learning as a characteristic learning method, and have become one of the reforms in mathematics classrooms.