介绍了磨题活动的由来、磨题研究活动的内容及操作程序。以“高考变式题的改编”为“磨题”主题的校本教研活动提高了试题的科学性,从而实现有效考试,促进师生反思和专业成长,促成了高效教学。 Introduced the origin of the grinding activity, the content and operation procedure of grinding research activity. The school-based teaching and research activities on the theme of “Adaptation of the Entrance Examination of the Entrance Examination of the Entrance Examination of the Entrance Examination for the Entrance Examination of the Entrance Examination of the Entrance Examination” have raised the scientificness of the examination papers so as to achieve effective examination, promote the reflection of teachers and students and professional growth, and promote efficient teaching.