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估算是人们在日常生活中对一些无法或没必要进行精确测量和计算的数量,进行近似或粗略估计的一种方法。在当今社会,复杂的计算可以由计算机或计算器完成,日常生活中估算的作用越来越突出。本文主要从四个方面分析在物理教学中如何培养学生的估算能力:加强估算教学,培养学生养成良好数感;让学生在具体情境中学习估算,培养估算意识;估算方法多样化,培养估算能力;培养先估再算、先估再验的习惯,有利于估算意识的形成。
Estimation is a method by which people make approximate or rough estimates of the number of measurements and calculations that are impossible or unnecessary in their daily lives. In today’s society, complex calculations can be done by computers or calculators, and the role of estimation in everyday life becomes more and more pronounced. This article mainly analyzes how to train students’ estimation ability in physics teaching from four aspects: to strengthen the teaching of estimation, to train students to develop a good sense of number; to let students learn estimation in specific situations and to cultivate the sense of estimation; to estimate the diversity of methods and to develop the estimation Ability; cultivate the first estimate again, the first estimate of re-test habits, help to estimate the formation of consciousness.