在小学数学计算教学中,从一年级下册开始,教材便安排了大量内容让学生学习竖式计算。每次引入竖式时,教材总会根据学生已有知识基础和生活经验,在摆小棒、口算、列表格的基础上引入,其编排意图是在对比中让学生明白用竖式计算的必要性。而老师在课堂教学中,往往错误地认为这种必要性就是让计算变得简单,课堂上大多会将这几种方法展示在大屏幕上,让学生比较哪种方法简单些。课堂上学生总是配合着老师"用竖式计算简单 In primary school math teaching, starting from the first grade under the books, materials will be arranged a lot of content for students to learn the vertical calculation. Each introduction of the vertical, the textbook will always based on the students have the knowledge base and life experience, put a small stick, port count, list grid based on the introduction of the layout is intended to allow students to understand the contrast with the need for vertical calculations Sex. The teacher in the classroom teaching, often mistakenly believe that the necessity is to make the calculation easier, the class will most of these methods will be displayed on the big screen, let students compare which method is simpler. Students in the classroom always cooperate with the teacher