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估算是培养学生数学素养的重要内容之一。小学数学中有大量的估算教学内容,贯穿在各册教材之中。但是,在日常教学中,有些教师对估算教学存在着一些理解上的偏差,应该引起我们的重视。误区一:过度追求估算结果的精确度。【课堂现象】苏教版三年级上册“两位数加两位数”。师:大家估计一下:49+14大约等于多少?看谁估计得最准确!
Estimation is one of the important parts in cultivating students’ mathematical literacy. There are a large number of elementary mathematics teaching estimates, throughout the textbooks. However, in the daily teaching, some teachers have some understanding of the teaching error estimation, we should pay our attention. Misunderstanding one: Excessive pursuit of the accuracy of the estimation results. Class phenomenon】 【Sujiao version of the third grade on the book “double-digit plus two-digit ”. Teacher: Everyone estimates: 49 +14 about equal to how much? To see who is estimated the most accurate!