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一、案例背景2012年4月南通数学年会的同课异构活动在南通市东方中学进行.本次课题共有5个,具体是:二次函数、与圆有关的位置关系、概率初步、图表信息问题以及图形的变换.分别由两位来自不同县区的教师执教同一课题,课后由同行、专家进行议课、评课、经验交流.笔者参加了这次活动,共听了6节课,随着时间的推移,多数课已经遗忘,但其中两节《与圆有关的位置关系》同课异构复习课,至今仍印在脑海中.不同的构思、不同的教学方法、不同的设计风格、不同的实施途径,出色的教学效果,让人难以忘怀.为了叙述方便,不妨将执教的两位老师分别记
I. Case Background The same-class heterogeneous activities of the same class at the Nantong Mathematical Annual Meeting were conducted in Dongfang Middle School, Nantong City in April 2012. There are totally 5 such topics as quadratic function, circle-related positional relationship, probabilistic preliminary chart Information problems and the transformation of graphics.Every two teachers from different counties coached the same subject, after class by peer, expert discussion board, assessment class, experience exchange.I participated in this activity, listening to a total of 6 classes , Most of the classes have been forgotten over time, but two of the “circle-related positional relationships” have been remembered in the same course as the heterogeneous review class. Different concepts, different teaching methods, different designs Style, different ways of implementation, excellent teaching results, unforgettable. For the convenience of narration, may wish to teach the two teachers were recorded