1背景揭示《排列》(第一课时)这节课,作为最近我省优质课评比、省“教坛新星”评比的考评课课题之一,引起了一线数学教师的广泛关注.参评者见仁见智,观摩者众说纷纭.作为上述两项活动的评委,对本节课自然有更多的感慨.这次作为省特级教师讲师团成员赴皖北讲学活动中,在确定所执教的课题时,首先想到的是《排列》 1 Background This course, “Arrangement” (the first class), is one of the most important topics in the appraisal of the competitions of the province’s high-quality curriculum and competitions and the “new star of the teaching arena” in the province, attracting a great deal of attention from first-line math teachers. As a judge of these two activities, there are naturally more feelings for this class.As a member of the provincial super-class teacher lecturer went to the Northern Liaoning Lecture Activities, in determining the subject taught, the first thought Is the “arrangement”