在数学教学中,我们经常会发现,面对同一个数学情境,有些学生反应敏捷,思路清晰;有些学生苦思冥想,难得结果。这实质上就是一种独特的心理结构和思维现象——数感。数感,是学习数学的重要结构变量,集中表现为:对知识教学的充分感知,对思维教育的强烈感应,对个性教育的深刻感受。数感,对于我们教师来说,也是一个既熟悉又陌生的概念。说它熟悉,因为新课标第一次明确地把“数感”作为数学学习的内容提出来,并且把“数感”摆在六个核心概念中的首要位置,充分表明让学生在数学学习过程中建立数感,是新 In mathematics teaching, we often find that in the face of the same mathematical situation, some students are quick to react and have clear ideas. Some students think hard and meditate. This is essentially a unique psychological structure and thinking phenomenon - number sense. Sense of number is an important structural variable in learning mathematics, focusing on: the full awareness of knowledge teaching, a strong sense of thinking education, personal education profound feelings. Sense of number, for our teachers, but also a concept that is both familiar and unfamiliar. It is familiar, for the first time the New Curriculum Criteria explicitly put the “number sense” as the content of mathematical learning and put the “number sense” at the top of the six core concepts, Students in the mathematics learning process to establish a sense of number is new