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新课程改革提倡的估算是一种真正以人为本的数学思想方法,它需要思维的训练和形成。《数学课程标准(2011年版)》要求:“能估计运算的结果,并对估算的合理性作出解释,能结合具体情况进行估算,并解释估算的过程,在解决具体问题的过程中,能选择合适的估算方法,养成估算的习惯。”估算在解决生活实际问题中的作用无处不在。一、遵循个体思维习惯,选择适时的估算策略估算是与生活密切联系的,在教学过
The estimation promoted by the new curriculum reform is a truly human-centered mathematical thinking method, which requires the training and formation of thinking. The Mathematical Curriculum Standard (2011 Edition) requires: “The result of an operation can be estimated and the justification of the estimate can be explained. It can be estimated on a case-by-case basis and the process of estimating can be explained. In the process of solving a specific problem, Choose the appropriate method of estimation to develop the habit of estimation. ”The role of estimation in solving practical problems of life is ubiquitous. First, follow the individual habits of thinking, choose a timely estimation method Estimates are closely linked with life, taught