The Quantitative Comparison Study Of Four Versions High School Geography Textbooks' Difficulty

Currently, along with the teaching curriculum reform in Senior High School, China is the implementation of the materials preparation system of "One Standard, Multiple Teaching Materials". When selecting materials, the difficulty of teaching materials is an important indicator of the quality of teaching. Therefore, the comparative study of textbooks'difficulty can provide a reference to select materials for schools and teachers.Through extensive finding and reading literature, I found that the teaching difficulty static model N= a S/T+G/T (1-a) builded by Shi Ningzhong can measure to the difficulty of the teaching material more scientifically, rationally and effectively. This model in mathematics, physics, chemistry and other disciplines has been widely recognized and affirmed, and is widely used to study the difficulty of materials. But very few people is based on this model to study four versions of high school geography textbooks'difficulty so far.This paper will use this model as the basis, take the four versions of high school geography textbooks in our country as the research object, taking the four versions of textbooks as the required 1 of a book as an example to study such as statistics and quantitative analysis separately from the teaching depth, teaching breadth and teaching time as three aspects. Calculate the teaching difficulty of four version of high school geography compulsory 1 and comparative analysis. At the same time regard "High School Geography Curriculum Standards" as a reference to compare compulsory four versions 1 and its optimum value of the degree of fit and materials analysis difficult. From this study we can find that:1. From the perspective of textbook difficulty, the difficulty of the "High School Geography Curriculum Standards" is the lowest. This is fit for the ideal state. Then China Map Press, HuNan Education Press, People's Education Press and ShanDong Education Press. Among them, the value of textbook depth and breadth of People's Education Press and Hunan Education Edition is larger, but their time value is smaller, so their difficulty is moderate. While the value of textbook depth and breadth of Lu Jiao version is smaller, but their time value is smaller also, so its difficulty is the most.2. From the four versions of high school geography textbooks and the "High School Geography Curriculum Standards" goodness of fit, four versions of textbooks are well reflected the request of "New Curriculum Standard". Especially China Map Press, it with the "High School Geography Curriculum Standards" of the agreement are the highest. But ShanDong Education Press is consistent with the lowest degree.3. From the perspective of the teaching material difficulty parameter optimal values, we can find that now the value of depth of the textbooks of People's Education Press, HuNan Education Press and China Map Pressare far beyond of the "High School Geography Curriculum Standards" while the value of depth of ShanDong Education Press is relatively low. From the textbooks breadth data indicated that thw value of the breadth of People's Education Press and HuNan Education Press are far beyond of the "High School Geography Curriculum Standards". While China Map Press and ShanDong Education Press are lower. From the textbooks time data shows that at present our country the value of time of four version high school geography textbooks are all far less than it should be, especially People's Education Press and ShanDong Education Press.The college entrance examination reform will coming in 2017, "new geography curriculum standards" further revisions will be a beacon of geography textbook, this paper will choose the difficulty of four version high school geography textbooks to compare, hope to provide certain feasibility of high school geography textbook revision opinion and the suggestion, provide reference for teachers' education teaching.