“动手实践、自主探索与合作交流是学生学习数学的重要方式。”学生在活动中能更好地积累经验,感悟、理解数学知识的内涵,主动建构知识体系,并发展解决问题的策略,因此,教师要让学生充分经历数学知识的形成过程。 “Hands-on practice, independent exploration and cooperation and exchange is an important way for students to learn mathematics. ” Students in the activities can better accumulate experience, sentiment, understand the connotation of mathematical knowledge, take the initiative to build a knowledge system and develop strategies to solve the problem Therefore, teachers should make students fully experience the formation of mathematical knowledge.