数学教学是由一连串“零散”的工作组成的,然而在这些“零散”的教学工作的背后,却能不时给我们以启发、警示和收获,使我们在启发中得到提升,在警示中受到鞭策,在收获中提升自己的专业素养.笔者所在的九年级数学备课组正是在这些“平常”的日子里,在同事之间激烈的探讨中获得观念上的冲击和业务上的提升的.如在一次集体备课活动时,我 Mathematics teaching consists of a series of “scattered” jobs. However, behind these “scattered” teaching tasks, we can inspire, warn, and reward us from time to time. The spur in the warnings and the promotion of their professional qualities in the harvest. The ninth-grade mathematical preparation group of the writer is on these “normal” days, in the fierce discussions between colleagues to obtain the impact of ideas and business On the promotion. For example, in a collective lesson preparation activity, I