A Comparative Study Of "Chemical Bond" In Different Versions Of Chemistry Compulsory Textbooks

With the implementation and promotion of the new curriculum reform in China,the chemistry textbooks for senior high school are presented in a brand-new form,changing from “one class and one book” to “one standard and many more books.” As an important object of curriculum reform,textbooks are the concrete embodiment of curriculum standards and curriculum contents.They are the main tools and basis for teachers' teaching and students' learning.“Chemical bond”,as the basis for learning material structure knowledge theory,is an important knowledge point for students to learn.Therefore,the dissertation chose the chemical bonds in the compulsory modules of different versions of textbooks as the research objects,and analyzed and compared them.This thesis started with the curriculum standards and compared the three parts of the chemistry textbook “Chemical Bond”,and then did comparative analysis in the selection of teaching materials,course organization,ways of presentation methods.Specific analysis is as follows:On the content selection,the author firstly analyzed the requirements of the curriculum standards in detail,compared the curriculum standards with the content of the selected textbooks,and compared and analyzed the selection of the “chemical bonds” and the consistency of the curriculum requirements.Furthermore,the author compared the selection of concrete contents of these three versions of textbooks.As for the organization of content,the author firstly analyzed the overall organization of the contents of the three editions of the textbooks,the preparation of the textbooks,the status of the “chemical bonds” in the textbooks and the overallstructure of the textbooks,and then specifically analyzed for “chemical bonds” from the textbooks.On the aspect of content presentation,first of all,the author compared and analyzed the design of the content,columns,pictures,forms and exercises of the“chemical bond”.The comparison and analysis included presentation of the content of the text,concrete concepts,and quantity of the columns,the number and characteristics of the pictures,type and degree of difficulty of the exercises,and the related knowledge points.Finally,the author drew conclusions by analyzing and comparing different versions of textbooks,found out the differences and features of the “chemical bonds”,and proposed suggestions from three aspects of content selection,organization,arrangement,and presentation of textbooks.