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。学生的数感是他们认数学习和计算学习中的智慧结晶,是他们经常接触并领悟常见数量关系的经验升化。而在小学数学教学中,计算学习是自始至终贯穿于其中的一条长线,口算是计算的基础。加强口算能力的培养与训练,可以促进学生抽象思维的发展,提高学生的计算能力,有效培养学生数感。小学生口算能力的高低,主要表现在算得是否正确、迅速和灵活。如何提高低年级 Sense of number refers to the number of mainly refers to the number, the relationship between the number of estimates of the operation results and other insights. The sense of number of students is the intellectual crystallization of their cognitive and computational learning, a progressive increase in their frequent contact with and comprehension of common quantitative relationships. In primary school mathematics teaching, computational learning is a long line running through it all the time, accounting is the basis of calculation. Strengthening the ability of portability training and training, can promote the development of students ’abstract thinking, improve students’ computing ability, effectively cultivate a sense of number of students. Primary and secondary school students’ ability to calculate their words, mainly in the calculation is correct, rapid and flexible. How to improve the lower grades