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小学数学中的估算对发展学生的智力和激活学生的思维有着重要的作用。下面就数学教学中如何培养学生的估算能力谈谈我的几点体会。一、整体出发综合考虑进行估算在教学中,训练学生运用已经掌握的知识和经验,从问题的整体出发,综合考虑条件,以敏锐的观察力、迅速的判断力,对问题进行简约的紧缩推理,快速地得出正确的答案。例如下面这道选择题:某校有男生1560人,女生占全校人数的48%,女生有()A.1600、B.1440、C.1580这道题,如果进行笔算,要先求出全校总人
Estimation in elementary mathematics plays an important role in developing students ’intelligence and in activating students’ thinking. Here’s how to train students in mathematics teaching estimation ability to talk about my experience. First, the overall starting Consideration to be estimated In teaching, training students to use the knowledge and experience has been mastered, starting from the overall problem, considering conditions, with keen observation, rapid judgment, the problem of contracted reasoning compact , Quickly come to the correct answer. For example, the following multiple choice questions: a school has 1560 boys, girls accounted for 48% of the school population, girls have () A.1600, B.1440, C.1580 this question, if pen calculations, first find out the whole school The total people