【前言】数学原本是有生命的,只是当其以文本形式负载于课本后这种生命的意义常因执教者过分注重教育在传授知识方面的功能而被忽视,这种机械的模式化的教学导致课堂远离生活而失去原本属于它的生命活力。针对这种情况,《国家数学课程标准》中再次强调指出:数学教学要紧密联系学生的生活实际,从学生的生活经验和已有知识出发,创设生动有趣的情境,使学生通过数学活动,感受数学的趣味和作用,体验数学的魅力所在。同时也要求让学生亲身经历将实际问题抽象成 [Introduction] Mathematics was originally life-long, but its meaning in life was often neglected when its textual form was loaded on the textbook. This kind of mechanistic teaching was often overlooked because the practitioner paid too much attention to the function of education in imparting knowledge. Lead to the classroom away from life and lost its original vitality of life. In view of this situation, “National Mathematics Curriculum Standard” emphasizes once again that: mathematics teaching should be closely linked with students ’actual life, starting from the students’ life experiences and existing knowledge, creating vivid and interesting situations so that students can feel through mathematics activities Math fun and role, to experience the charm of mathematics. At the same time also requires students to experience the abstract as a practical problem