“数感”位居新课程中“六个核心概念”之首。“数感”是指对数的含义、数的计算技能、数的顺序大小、数的多种表达方法、数的模式、数的运算及结果的准确感知和理解等。教师肩负着培养学生数感的重任,教师应在不断的数学教学活动中,让学生在对数的充分感知、感应和感受中,培养学生的数感。一、创设教学环境,培养学生数感 “Number sense ” in the new curriculum “six core concepts ” first. “Sense of number ” refers to the meaning of the logarithm, the number of computing skills, the order of the number of the size of the number of multiple expressions, the number of modes, the number of operations and the results of accurate perception and understanding. Teachers shoulder the heavy responsibility of cultivating the sense of number of students. Teachers should keep students’ sense of number in the process of constant teaching of mathematics so that students can fully sense, feel and feel the logarithm. First, create a teaching environment, develop a sense of number of students