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数感是一种主动地、自觉地理解数和运用数的态度与意识,是人的一种基本的数学素养。它是建立明确数概念的数学活动的基础,是将数学与现实问题建立联系的桥梁。义务教育第一学段(1～3年级)学生要学习万以内的数、简
Sense of number is a kind of initiative and conscious understanding of the number and the use of the number of attitudes and awareness of people is a basic mathematical quality. It is the basis for the establishment of mathematical activities that define the concept of numbers and the bridge between mathematics and practical problems. The first period of compulsory education (grade 1 ~ 3) students should learn the number within a million, Jane