什么是数感呢?数感是一种主动、自觉或自动化地理解数和运用数的态度与意识,是对数学对象、材料直接迅速、正确敏锐的感受能力。“数感”不是知识,也不是技能,它不是通过他人的传授而能够获得的。培养学生的数感,要让学生通过丰富多彩的生活情境去感知、去体验。 What is the sense of number? Sense of number is a kind of active, conscious or automated understanding of the number and the use of the number of attitudes and awareness of the mathematical object, the material directly and quickly, the correct sensitivity of the ability to feel. “Number sense ” is not knowledge, is not a skill, it is not through the teachings of others can get. Students develop a sense of number, let the students through a variety of life situations to perceive, to experience.