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上学期末,参加区里的一个教研活动,全程听了以“三位数除以一位数”为题进行同课异构的9节课。这是苏教版《数学》三年级下册的内容,教材的例2教学三位数除以一位数的笔算986÷2,在解决了商的最高位的问题后,呈现竖式(图1),提4932 986出:你能接着算下去吗?执教的老8师绝大部分都以开放的教学姿态图放手让学生接着往下算。1听最初几节课时,我发现不少学生在独立尝试接下去算的过程中,出现以下写法(图2、图3):
At the end of the semester, I participated in a teaching and research activity in the district, listening to the 9 lessons of lectures on the same subject with the title of “three digits divided by one digit”. This is the Sujiao version of “mathematics,” the third grade of the second volume of the contents of teaching materials Example 2 teaching three digits divided by a single number of calculations 986 ÷ 2, in the solution to the business’s highest question, showing vertical (Figure 1), to mention 4932 986: Can you then count it? The vast majority of the teaching of the old 8 division to let the students go down with open teaching attitude map. Listen to the first few lessons, I found that many students in the process of trying independently, the following wording (Figure 2, Figure 3):