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背景:数学课程标准指出:有效的数学学习活动不能单纯地依赖模仿与记忆,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。数学教学活动必须建立在学生
Background: The standard of mathematics curriculum points out that effective mathematics learning activities can not rely solely on imitation and memory, hands-on practice, independent exploration and cooperation and exchange are important ways for students to learn mathematics. Math teaching activities must be based on students