史宁中教授指出:“基本活动经验是指学生亲自或间接经历了活动过程而获得的经验。”张奠宙教授指出:“数学活动经验是指在数学目标的指引下,通过具体事物进行实际操作、考察、思考,从感性向理性飞跃时所形成的认识。”总之,数学活动经验对于数学活动的顺利探究、数学思想方法的领悟、学生数学观念的形成等有着十分重要的作用。那么什么是量感呢?量感就长度测量而言,必须有两个因素:测的单位和量的多少。量感是指对长度单位和物体长度的综合感知,是对物体量 Professor Shi Ningzhong pointed out: “The experience of basic activities refers to the experience gained by the students themselves or indirectly through the process of activities.” Professor Zhang Din-chou pointed out: “The experience of mathematical activities refers to the experience of mathematics under the guidance of specific things Actual operation, investigation, thinking and cognition formed from sensibility to rational leap. ”In short, the experience of mathematical activity plays an important role in the smooth exploration of mathematical activities, the comprehension of mathematical thinking and the formation of students’ mathematical concepts. So what is the amount of flu? Volume measurement in terms of length, there must be two factors: the unit of measurement and the amount of how much. Sense of volume refers to the length of the unit and object length of the integrated perception is the amount of objects