一、问题的提出估算是根据已有数据和某些要求做大概的推断,是人们在日常生活与数学学习中应用相当广泛的数学运算形式和行为,相对于机械的、繁杂的运算,更具有应用价值。那么,估算在教师的心中到底有多重,学生估算的实际水平到底怎样呢?我们对当前小学生估算发展水平的现状进行了三次检测,并和教师、学生面对面的交流与分析,为教师的估算教学提出建议与探讨的问题二、检测的方法与过程2011年的11月开始,我们对全县12 First, the issue of estimation Estimation is based on available data and some of the requirements to make a rough estimate of people in daily life and math learning applications a wide range of mathematical forms and behavior, compared to mechanical, complicated operations, more Value. So, what is the actual estimation of the students' actual situation in the teacher's mind? We have carried out three tests on the present situation of the estimation of the development level of primary school pupils and conducted face-to-face communication and analysis with teachers and students so as to provide instructional assessment for teachers Proposed and discussed the issue Second, the detection methods and processes Beginning in November 2011, we count 12