一、引情激趣的导入优秀精彩的开始,往往像磁石一样深深地把学生吸引住。虽然说一节课的开头只有短短的几分钟,但它将影响整节课的质量,所以,必须重视新课的引入。二、集体设疑的讨论首先,教师要转变观念,使师生互动贯穿于整个课 First, the introduction of fantastic inspiration Excellent start of the wonderful, often as deeply as the magnet to attract students. Although the beginning of a class is only a few minutes, it will affect the quality of the whole class, therefore, we must pay attention to the introduction of the new class. Second, the discussion of collective suspicion First of all, teachers should change their concepts so that teachers and students interact throughout the entire class