一、“孩子,你的疑惑我点拨”这是一节复习课(苏教版四上),我给学生出了这样一道判断题:被除数不变,如果除数扩大10倍,商就缩小10倍。这是一道正确的命题,班上几乎所有的同学都判对,可有一个叫杨思其的同学举起了的手。既然有人反对,我总想刨根问底,弄清他到底错在哪儿,杨思其说:“我既认为它是对的,又认为它是错的!”这种回答,引起了班上一阵笑声。我 One, “This is a review class (Sujiao version IV), I give the students out of such a judgment: the same dividend, if the divisor is enlarged 10 times, the business to narrow 10 times. This is a correct proposition. Almost all the students in the class are sentenced. There may be a hand raised by a classmate named Yang Siqi. Since there are objections, I always want to ask the bottom line and find out exactly where he is wrong. Yang Siqi said: ”I think it is right and I think it is wrong!" This reply caused a laugh in the class . I