| Internet broadcast teaching method had entered into ethnic andremote areas for mo re than a decade years. During this period,Internet broadcast teaching improved the achievement of local students significantly and also improved the teaching level of local middle school teachers effectively. Since the author participated in ne ar 2 years of teaching practices in junior part of Sichuan Dechang High School and disc overed that plenty of practical problems and difficulties were existed in Internet broadcast teaching of junior physics. These problems and difficulties had certain representativeness for all network schools in Liangshan Area. This project took internet physics teaching resources of Chengdu Yucai Middle School and combined the practical conditions of local students and teachers in Dec hang County and teaching experiences in Internet broadcast cooperative schools. It mai nly discussed following two aspects:I. problems and countermeasures existed in all link s of "Four-simultaneous" for junior physics internet course of Dechang High School; II. Under background of larger differences between remote end students in Liangshan Are a and front end students in Chengdu, the practice effects and feedback analysis for junio r physics group of Dechang High School and the optimized "internet class"&"non-inter net class" which use internet course resources by the author personally. With discussion of this paper, it was hoped that high quality internet course resources could service for physics teaching of high schools in ethic areas better, so that the majority students in eth ic areas could enjoy high quality teaching resources in developed areas better. |