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估算对学生智力活动具有一定的定向性作用。它可以根据具体条件及有关知识,对事物数量或算式的结果快速做出大概准确的判断或估计.它在日常生活中的应用十分广泛。所以小学数学教师应该充分利用和挖掘教材相关的内容,培养学生的估算能力。一、挖掘教材内容,加强估算训练首先,要在口算训练中渗透估算方法。教材中的估算大多是通过口算进行的。在口算中渗透估算方法,可使学生运
Estimation has certain directional effect on students’ intelligence activities. It can be based on the specific conditions and related knowledge, the number of things or results of the formula quickly make a rough estimate or estimate it in daily life is widely used. Therefore, primary school mathematics teachers should make full use of mining materials and related content, develop students’ estimation ability. First, excavate the content of teaching materials, strengthen the estimation training First of all, we must penetrate the estimation method in the port arithmetic training. Estimates in textbooks are mostly through the mouth count. In the mouth of the calculation method of penetration, students can transport