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在教学有理数加减法时,我发现学生们计算的正确率不高。经过研究,我开展了两项特训:一是引导学生进一步理解有理数加减法的四条法则。在学生全面理解每条法则的具体含义和用法的基础上,要求学生熟记法则;二是分组出示有理数加减法计算题,针对有理数加减法的四条法则分类进行专项强化训练。进行完两项训练后,我又出了一组题目,我原以为经过上述训练,学生们的计算肯定会有一个质的飞越。但结果却大大出乎我的意料,
In teaching rational numbers addition and subtraction, I found that students calculate the correct rate is not high. After research, I carried out two special training: First, to guide students to further understand the four rules of rational addition and subtraction. On the basis of students’ comprehensive understanding of the specific meanings and usages of each law, students are required to memorize the rules. The second is to present the calculation questions of the addition and subtraction of rational numbers in groups and conduct special intensive training for the four rules of rational addition and subtraction. After finishing the two exercises, I again came up with a set of questions. I thought that after the above training, the students’ calculations would surely have a qualitative flight. But the result is far beyond my expectations,