古人云：“凡事预则立，不预则废”。备课作为课堂教学的起点和基础，是决定课堂教学质量高低的重要一环。教师的备课，要求备大纲、各教材、各学生、各教学过程或程序的组织，以及难备各种教学用具等。这些工作的高效完成始终是教师教学过程中的主要课题。在多年的教学实践中 The ancients said: “Everything is forewarned, and it is not foregoed.” Preparing lessons as the starting point and foundation of classroom teaching is an important part of determining the quality of classroom teaching. The teacher’s lesson preparation requires the preparation of outlines, teaching materials, various students, the organization of teaching processes or procedures, and the difficulty in preparing various teaching equipment. The efficient completion of these tasks has always been a major issue in the teaching process of teachers. In many years of teaching practice