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“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。《义务教育数学课程标准(2011年版)》明确提出要通过义务教育阶段数学课程的学习,注重发展学生的“数感”、符号意识、空间观念,几何直观、运算能力、推理能力、应用意识、创新能力等十个核心能力。“数感”是十个核心能力之一,
“Sense of number” mainly refers to the number and quantity, the relationship between quantity, the calculation of the results of estimates and other insights. The establishment of “number sense” helps students understand the meaning of number in real life and understand or express the quantitative relationship in specific situation. “Compulsory Education Mathematics Curriculum Standard (2011 Edition)” clearly proposed to pass the compulsory education phase of mathematics curriculum, pay attention to the development of students “number sense ”, symbolic awareness, space concept, geometric intuition, computing power, reasoning ability, application Awareness, innovation and other ten core competencies. “Number of sense ” is one of the ten core capabilities,