| Textbooks diversification policy, promulgated by the ministry of education, causes the situation of "one outline, many textbooks".At present, four versions of senior geography teaching materials have their own advantages and disadvantages. In order to give teaching materials users better advice on choosing textbooks, textbooks evaluation is very important. In this thesis, according to the theory materials gained from the library and practice materials from Xiang version textbooks trial areas, combining with my own teaching experience, I try to analyze and evaluate the characteristics and problems of Xiang version textbooks'surface system and deep system, and explore double systems'optimal approaches.In the first part, it introduces background and significance of the subject proposed, the domestic and foreign researches status, and introduces the theoretical basis and the main research methods, and important concepts are defined.In the second part, it analyzes and evaluates the surface system in detail, the characteristics and problems of the text system, the image system and the operating system.In the third part, it evaluates the deep system, the characteristics and problems of the knowledge system,the intelligent system and the ideological education system.The fourth part is the focus of this paper. According to the above information, it makes further discusses on the system optimization methods of Xiang version natural geography textbooks. From two aspects, surface system and deep system, in the way of cases analysis, the key research is the reasonable allocation of the image, text and operating systems, and the valid expression of the deep system with the surface system optimization is the further research.In the fifth part, it evaluates the usage of Xiang version natural geography textbooks, and gives some advice to the writers and users. |