新课改以来,在计算教学中存在过分强调计算方法的多样化、而减少了很多必要练习的现象。经过一阶段时间的教学,教师发现学生们的思维虽然活跃起来了,课堂气氛也显得热热闹闹的,但是学生讨论交流占据了课堂的大部分时间,课堂练习的时间少了,有不少学生对算理并不理解,计算结果错误率 Since the new curriculum reform, there has been undue emphasis on computational teaching in computing teaching, which has reduced the number of necessary exercises. After a period of teaching, teachers found that although the students are active in thinking, the classroom atmosphere is also bustling, but students discuss the exchange accounted for most of the time classroom, classroom practice less time, many students Do not understand the calculation, calculate the result error rate