对于课堂教学,良好的开端具有十分重要的意义。好的导入能引起学生的高度注意,是一把开启学生兴趣大门的钥匙。正如著名教育学家魏书生所说:“好的导语像磁铁,很快能把学生的注意力集中起来;好的导语又是思想的电光火石,能够启发学生,催人奋进。”导入的设计是一门艺术,能够没计艺术性很强的导入,也是衡量教师教 For classroom teaching, a good start is of great importance. Good introduction can arouse the attention of students, is a key to open the door of interest of students. As the well-known educator Wei Shusheng put it, “Good introductory phrases like magnets quickly bring students’ attention together. Good introductory phrases are also the electro-optical flint of thought, inspiring students and enlightening.” The design is an art that can be imported without being highly artistic and is also a measure of teacher teaching