备课是课堂教学的基础，是实施教学的依据，是设计教学程序蓝图。课堂教学能否顺利完成，能否收到预期的效果，在很大程度上取决于备课是否充分、是否切合实际，因而要提高教学效率，功夫须放在课前。在以往的教导工作中，对备课情况的检查往往被看作是衡量教师“五环节”管... Preparing lessons is the foundation of classroom teaching, the basis for implementing teaching, and the blueprint for designing teaching programs. Whether the classroom teaching can be successfully completed and whether it can receive the expected results depends to a large extent on the adequacy of preparation and whether it is realistic. Therefore, it is necessary to improve the teaching efficiency. Kung fu must be placed before class. In the past teaching work, the inspection of the preparation of the lesson is often seen as a measure of the teacher’s “five links” control...