“数感”是我们既熟悉又陌生的一个概念。在人们的学习和生活中,经常要和各种各样的数打交道。人们常常会有意识地将一些现象与数量建立联系,如有一个空盒、一堆糖,人们就会有意识地对两者进行比较:这堆糖装在盒子里能不能装下、能不能装满?这就是数感在起作用。建立数感可以理解为会“数学地”思考,这对每个人来说都是重要的。数感是人的一种基本数学素养。 “Number sense ” is a concept we are both familiar and unfamiliar. In people’s learning and life, often dealing with a variety of numbers. People tend to be conscious of the number of phenomena associated with the number of, if there is an empty box, a pile of sugar, people will consciously compare the two: the pile of sugar in the box can not be loaded, can not be filled This is the number of sense at work. Creating a sense of number can be understood as thinking “mathematically,” which is important for everyone. Sense of number is a basic mathematical quality of people.