常言说,教学有法,但无定法,贵在得法。而良好的开头是成功的一半。教师讲课导入得好,不仅能吸引住学生,唤起学生的求知欲望,而且能燃起学生智慧的火花,使学生积极思维,勇于探索,主动地去获取知识。反之学生很难马上进入角 As the saying goes, teaching a law, but no law, you are in law. The good beginning is half the battle. The introduction of teachers’ lectures is good, which can not only attract students and arouse students’ curiosity and desire, but also spark students’ wisdom so that students can actively think, explore and take the initiative to acquire knowledge. Conversely, it is difficult for students to enter the corner immediately