话题中所述教学片段折射出在少数教师的教学中普遍存在的一些问题。一、教师缺少一颗尊重学生的“诚心”学生第一次已经正确地化简了两步,只差一步就成功了。教师应该先表扬,再引导学生纠正错误。教师可以说:“你这两步做得完全正确,说明你学得很好。不过,化简比的结果是28∶21,可以吗?”从而,引导学生去思考错误原因。 The topics described in the tutorial reflect some of the problems that are common in the teaching of a few teachers. First, the lack of a teacher to respect the students “Sincerity ” The first time students have been properly simplified two steps, only one step to success. Teachers should praise, and then guide students to correct mistakes. The teacher can say: “You are doing exactly the right two steps, that you have learned very well, but the reduction ratio is 28:21, can you?” Thus, to guide students to think about the reasons for the error.