动手实践、自主探索与合作交流是学生学习数学的重要形式。动手操作是一种定向的心智活动。传统的教学往往是用口头讲解,而不是从实际操作中进行数学课堂教学的。一些探索性的操作活动为学生积极探究,主动获取知识提供了机会,为学生感知具体数学知识的现实背景和来源创造了条件。 Hands-on practice, independent exploration and cooperation and exchange are important forms of learning mathematics for students. Hands-on action is a directed mental activity. The traditional teaching is often used to explain the verbal, rather than from the actual operation of mathematics classroom teaching. Some exploratory operational activities provide opportunities for students to actively explore and take the initiative to acquire knowledge, and create conditions for students to understand the actual background and source of specific mathematical knowledge.