摘要
学生学习数和计算不只是学习数学知识，更重要的是要了解数和运算的实际意义以及用数来表达信息、解决问题。因此，教师应该让学生联系生活，建立数感；在合作交流中，形成数感；在实践活动中，强化数感。
Students＇ mathematics learning about number and the calculation is not just learning mathematics knowledge, more important is to understand the practical significance of the number and the operation, and use number to express information, to solve the problem. Therefore, we should let the student contact life, build number sense;form number sense in the cooperation and communication;strengthen the number sense in practice.
关键词
数感
合作
实践
规律
number sense
cooperation
practice
law
