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《义务教育数学课程标准(2011年版)》对数感的提法是“数感主要是指关于数与数量、数量关系、运算结果估计等方面的感悟生理解现实生活中数的意义,.建立数感有助于学理解或表述具体情境中的数量关系”.一、对数与数量的感悟在小学低段,儿童对数的感悟是从数数学习辨认各组实物对象的多少开始建立的,在数数的过程中,学生理解数字的意义和大小,了解数字与客体数量一一对应的原则,他们能把数量词与其代表的少量物体联系起来,逐渐过渡到数大量的物体;与此同时他们会形成这样的经验:知道数数的顺
“Mathematical Curriculum Standard for Compulsory Education (2011 Edition)” The reference to logarithmic sense is: “Sense of number mainly refers to the significance of knowing the number of real life in the aspects of number and quantity, quantity relationship and operation result estimation. The establishment of a sense of number helps to understand or describe the relationship between the number of specific situations. ”First, the perception of the number and quantity In the lower primary school, the perception of children’s logarithm is to learn from the number of physical objects in each group In the process of counting, students understand the meaning and size of numbers and understand the principle that there is a one-to-one correspondence between numbers and objects. They can associate quantitative words with a small number of objects represented by them and gradually transfer them to a large number of objects. At the same time they will form the experience: Know the number of Shun