最近，笔者听了三位老师上的三节同一内容的教学观摩课──多边 形面积计算的整理和复习(九年义务教育五年制小学数学第八册)。这三节课的教学设计各具 匠心，执教教师的素质也都相当高，教学中不乏精彩之处，令人耳目一新。然而，美中不足 的是，对教材中的两道判断题的处理都 Recently, I listened to three teaching and observing lessons of the same content on three teachers - the collation and review of polygon area calculation (the eighth volume of five-year elementary school mathematics for nine-year compulsory education). The three classes of teaching design each with ingenuity, coaching teachers are also very high quality, there is no shortage of teaching wonderful, refreshing. However, the fly in the ointment is the handling of two judgment questions in the textbook