对数感特点及其教学的思考

On Characteristics and Teaching of Number Sense

对比解读2001版和2011版数学课程标准中数感的内涵,结合数的意义、数的表示、数量关系,数的运算,数量的估计和数的问题解决这六方面内容,并以数感的基础性、直觉性、抽象性、层次性和差异性特点为指导来培养学生数感。

This paper is to figure out the problems of the content, the presentation, the relation, the cal- culation, the evaluation and the problem - solving of numbers by analyzing the meaning of the number sense in Mathematics Curriculum Standards （ Experimental Version） and the version of 2011, and to cultivate students＂ number sense according to the characteristics of number sense＇s fundamentality, intuitiveness, ab- straction, hierarchy and diversity.