计算既是数学教学的一个重要组成部分,又是学生终身发展必备的知识。课标教材虽然在计算教学的编排上发生了很大的变化,但是计算在整个教材中仍占有很大的比重。从平时的课堂来看,教师对于计算教学一般都习惯于采用这样的模式:出示题目——讲授或尝试——得出基本方法——大量的巩固练习。这样的模式,忽视了计算与日常生活的联系,纯粹地把计算作为一种技能传授给学生,甚至为 Calculation is not only an important part of mathematics teaching, but also an essential knowledge for students’ life-long development. Although the standard textbook teaching in the calculation of the arrangement has undergone great changes, but the calculation still accounts for a large proportion of the entire textbook. From the usual class of classrooms, teachers are generally accustomed to using computational teaching as a model: presenting questions - teaching or trying out - deriving basic approaches - substantial consolidation exercises. Such a model ignores the connection between computing and everyday life, purely teaching computing as a skill to students, and even