教材是教师和学生进行教学活动的凭借材料 ,是教学信息沟通的主要中介媒体 ,钻研好教材是备课、上课 ,达成教学目标 ,完成教学任务的基础和前提。钻研教材是一项复杂的创造性工作 ,它涉及面广、头绪多、弹性大 ,需要教师在教学理论、实践经验、个人素养等方面必须具备较高的水 Teaching materials are materials that teachers and students rely on to carry out teaching activities. They are the main medias for communication of teaching information. Studying good textbooks is the basis and premise for preparing lessons, attending classes, reaching teaching objectives and completing teaching tasks. Studying teaching materials is a complex and creative work, which involves a wide range of clues, flexible, requires teachers in teaching theory, practical experience, personal qualities, etc. must have a high water