在数学课堂中,经常可以听到这样的对白:“同学们,你们听懂了吗?”“听懂了。”还有学生在小声嘀咕:这么简单,谁不会啊。可是到真正动笔的时候,常发现学生的错误率大大超出我们的预想。诸如此类“听听就懂,做做就错”的现象不但困惑着老师同时也严重的 In math class, you often hear the following dialogue: “Classmates, do you understand?” “” “Understand.” “There are students whispered in whispers: so simple, who would not ah. But when it comes to writing, students often find that the error rate goes well beyond our expectations. Such as ”listen to understand, doing wrong" phenomenon not only confused the teacher but also serious