课堂导入是教师通过借助各种教学媒体和各种教学方式,吸引学生注意,激发学生的学习兴趣,产生强烈的学习动机,明确学习方向和建立知识间联系的一种教学活动方式.这一目的性行动广泛地运用于上课开始.一堂课的导入是整个课堂教学中十分重要也应该是十分精彩的一环.俗话说:万事开头难,好的开始是成功的一半.一堂课是否具有高效率与教师两 The introduction of the classroom is a teaching activity that teachers can attract students ’attention, stimulate students’ interest in learning, generate strong motivation to learn, clarify the direction of learning and establish the connection between knowledge through various teaching media and various teaching methods. Sexual activity is widely used in the beginning of the class.A class introduction is very important and should be a very important part of the whole class teaching.As the saying goes: Everything is hard at the beginning, a good start is halfway to success. With teacher two