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对探讨“估算”这个问题,我想法已久。在新课程下,估算已成为现代公民必备的一种数学素养。学生已经学过了加减法估算和乘除法估算的知识,并且掌握了估算的方法。那么,在我们生活中哪些地方可以用到估算这个本领?怎样运用估算对日常生活中的一些事情进行预先的估计、策划呢?为了探讨这些问题,并使学生形成估算的意识,养成估算的习惯,我们把研究的主题定为“估算”。
I have been thinking a long time ago about the issue of “estimation.” Under the new curriculum, estimation has become an essential mathematical literacy for modern citizens. Students have learned about the addition and subtraction and multiplication and division estimates, and have mastered the methods of estimation. So, where in our life can be used to estimate this skill? How to use estimation to estimate some things in daily life in advance, planning it? In order to explore these problems, and make students form an estimated consciousness, to develop estimates Habit, we set the theme of the study as “estimation.”