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低年级学生由于自身的年龄特征,在进行加减法计算时往往错误率较高。在计算前,如果能进行准确的估算,对提高计算的准确率是非常有帮助的。同时,在日常生活中很多时候也要用到估算,而不需要精确计算。因此在教学中,教师应加强估算教学,培养学生的估算意识,发展学生的估算能力,让学生拥有良好的数感。在教学实践中,我从以下几方面对加
Due to their own age characteristics, lower-grade students tend to have higher error rates when making additions and subtractions. Before calculating, if you can accurately estimate, to improve the accuracy of the calculation is very helpful. At the same time, estimation is often used in everyday life without the need for precise calculations. Therefore, in teaching, teachers should strengthen the estimation of teaching, develop students ’sense of estimation, the development of students’ estimation ability, so that students have a good sense of the number. In teaching practice, I add from the following aspects