电教手段形式多样,作为其中之一的投影媒体,以其直观、形象、生动、感染力强等独特的长处和优势显现出极大的生命力,成为广大教师广泛采用的一种手段。根据自己多年教学实践,我认为把电化教学运用于地理教学, With various forms of audio-visual education, projection media, as one of them, has shown great vitality with its unique strengths and advantages of being intuitive, vivid and contagious, and has become a widely used method by teachers. According to my years of teaching practice, I think that the use of electrochemical teaching in geography teaching,