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案例背景笔者曾参加某中学数学组的校本教研——案例教学活动,目睹了该校初一数学备课组老师进行“同课异构”观摩课活动中的两个教学片段,课题是义务教育课程标准实验教科书七年级《数学》(华师大版)下册第八章第3节:探索多边形的外角和——经典老课.故事都发生在师生共同明确
Case background The author once participated in the school-based teaching and research-case teaching activities of a middle school mathematics group. He witnessed two teaching clips of the mathematics lesson preparation group of the school’s junior middle school teacher performing the “same class isomerism” lesson. The subject is the compulsory education curriculum. Standard Experiment Textbook Grade 7 Math (Chinese Normal University Edition) Next Volume Chapter 8 Section 3: Exploring Polygonal Outer Corners and Classic Old Lessons. Stories are shared by teachers and students