《数学课程标准》中指出:“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、自主探究与合作交流是学生学习数学的重要方式。”在数学教学中,教师要积极创造良好的学习环境,设计合理的教学活动,将学生的学习活动变成一种积极主动的探究过程,让他们能主动地运用已 The standard of mathematics curriculum states: “Effective mathematics learning activities can not rely solely on imitation and memory, hands-on practice, independent inquiry and cooperation and exchange and communication are important ways for students to learn mathematics.” In mathematics teaching, teachers should actively create Good learning environment, well-designed teaching activities, the students’ learning activities into a proactive exploration process, so that they can take the initiative to use the