《全日制义务教育数学课程标准》提出:“要让学生在参与特定的数学活动,在具体情境中初步认识对象的特征,获得一些体验。”所谓体验,就是个体主动亲历或虚拟地亲历某件事并获得相应的认知和情感的直接经验的活动。让学生亲历经验,不但有助于通过多种活动探究和获取数学知识,更重要的是学生在体验中能够逐步掌握数学学习的一般规律和方法。教师要以“课标”精神为指导, The full-time compulsory education mathematics curriculum standard puts forward: “Let students take some specific mathematical activities in the initial understanding of the characteristics of the object to obtain some experience. ” The so-called experience is the individual experience personally or virtual calendar Something and get the corresponding direct experience of cognition and emotion. Let students experience, not only help through a variety of activities to explore and acquire mathematical knowledge, more importantly, students can gradually grasp the general rules and methods of learning mathematics. Teachers should be “class standard” spirit as a guide,