一、运用“电教手段”进行教学,直观性效果极为明显,它能改到在一般常规课堂教学中运用地图、表格、照片和语言等直观手段难以阐述清楚的知识概念,使学生获得茅塞顿开的效果。特别是在给初中学生讲一些重点和难点问题(如地球构造、地形外、貌河流、湖泊等,)通过投影仪或幻灯片把图象演映出来,学生能很容易地理解,另外,对一些 First, the use of “teaching means ” teaching, intuitive effect is extremely obvious, it can be changed to the use of maps, tables, photos and languages ​​in general classroom teaching is difficult to explain the clear concept of knowledge, so that students get open Effect. In particular, students should be able to understand the key and difficult issues (such as the structure of the earth, the landscape, the rivers, the lakes, etc.) that can be easily understood by the students through projectors or slides. some