《数学新课程标准》在“关于学习内容”和“总体目标”中都提到了“数感”这个概念。在内容标准的几个阶段都强调了培养学生数感的问题。尤其在总体目标中提出要使学生“经历运用数学符号和图形描述现实世界的过程,建立数感和符号感,发展抽象思维”。可见,理解数感,让学生在数学学习过程中建立数感,是新课程标准非常重视的问题。对于小学生来说,数学学习的经历非常有限,数学教师——学生数学学习的组织者、引导者、合作者,如果能够准确把握数感的涵义,在此基础上进一步 The New Mathematical Curriculum Standard mentions the concept of “number sense” in both “Learning Content” and “Overall Objectives.” In several stages of content standards have emphasized the issue of training students sense of number. In particular, it is proposed in the overall goal that students should “experience the process of using the mathematical symbols and figures to describe the real world, create a sense of number and sense of symbols and develop abstract thinking.” Can be seen, to understand the number of flu, so that students in the mathematics learning process to establish a sense of number is the new curriculum standards attach great importance to the issue. For pupils, mathematics learning experience is very limited, mathematics teachers - student math learning organizers, guides, collaborators, if we can accurately grasp the meaning of sense of number, on the basis of further