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数学新标准中明确指出:“能结合具体情境,选择适当的单位进行简单估算,体会估算在生活中的作用。”那么在小学阶段如何培养学生的估算意识呢?1.转变教师观念,培养学生估算意识。很多教师认为只要数一数、量一量、算一算就知道皮球的数量、数学书的长度、带的钱够不够,没有必要让学生绞尽脑汁去估算。熟不知,人们在日常生活中,所需要的估算结果比精确值的次数要多得多。我们总不能走到哪都拿着测量工具吧?所以我们总
The new mathematics standard states clearly: “Combining with specific situations, we can select the appropriate units for simple estimation and realize the role of estimation in our life.” How to cultivate the students ’estimation consciousness in primary school? 1. Change teachers’ Develop students’ sense of estimation. Many teachers think that as long as the number of one, the amount of an amount, calculate the number of the ball know, the length of the math book, with enough money, there is no need for students to rack their brains to estimate. I do not know, people in daily life, the estimated results required more than the exact number of times to be much more. We always can not go where are the measurement tools? So we always