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《义务教育数学课程标准(2011年版)》指出:“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。建立数感有助于学生理解现实生活中数的意义,理解或表述具体情境中的数量关系。”要学好、用好数学,就应该具备良好的数感。数感对数学教学和数学的运算运用起着重要作用。培养学生数感是当前数学教学的一个重要任务。一、在生活中启蒙数感数学来源于生活,启蒙学生的数感,离不开学生的生活经验。因此,我们在数学教学中必须紧密联系
“Compulsory Education Mathematics Curriculum Standard (2011 Edition)” pointed out: “Sense of the number of mainly refers to the number and quantity, the relationship between quantity, the calculation of the results of estimation, etc. The establishment of a sense of number helps students understand the meaning of real-life number , Understand or describe the relationship between the number of specific situations. ”“ To learn, make good use of mathematics, you should have a good sense of the number. ” Number sense plays an important role in mathematics teaching and mathematical operation. It is an important task in current mathematics teaching to cultivate students’ sense of number. First, enlightenment in life, number of senses comes from life, a sense of the number of enlightenment students, inseparable from the student’s life experience. Therefore, we must be closely linked in mathematics teaching