长期以来,我们对小学数学作业的批改方式,往往是把做对了的打上“√”,做惜了的打上“×”;然后凭着批改时的印象,在下一节课重讲。我们认为这样做的效果往往是不大的,比如,某一道虽经订正,而学生却常常一错再错。 For a long time, our way of correcting primary school mathematics assignments is to put “√” on the right thing and “x” on it. Then, with the impression of criticism, we will stress the next lesson. We think that the effect of doing so is often insignificant. For example, although a certain course has been revised, students often make mistakes.