| Since the implementation of the new curriculum reform,the writing of the contents of the chemical textbooks has changed greatly.In the stage of compulsory education,the content of chemistry curriculum is mainly "social center",emphasizing the connection between chemistry and life and society.The content of compulsory courses in high school is transformed from "social center" to "subject center",while the elective course in high school is written completely with "subject center",and its internal capacity is more specialized and subject oriented.This change requires that front-line teachers should better grasp the connection rule of knowledge in changing,so that we can finish teaching tasks more effectively.However,there are many problems in practical teaching,such as students' learning and teachers' teaching.The main reason is that teachers have problems in dealing with the connection between chemical knowledge in middle and high school.At the same time,in recent years,the reform of college entrance examination reform,which also further embodies the importance of the cohesion teaching of Chemistry Teaching in the early and high schools.Under this background,it is very important to master the characteristics and the cohesive law of the contents of the middle and high school chemistry textbooks,which is very important for the chemistry teaching in the middle and high school.On the basis of literature review and analysis,through careful study of the primary and high school chemistry textbooks,Selecting six parts of the core knowledge as the research object which are "chemical reaction rate and limit","atomic and atomic structure","chemical energy and heat energy","metal and its compounds","oxygen derivative of hydrocarbon","Chemical bond".With the guidance of constructionist learning,the theory of the recent development zone and the theory of knowledge transfer,the integrated analysis of the selected contents is carried out through case analysis and comparative study.First of all,the requirements of the six parts of the curriculum standards are explained in detail,and their teaching requirementsand suggestions are clarifying,and the connection between the six parts of the curriculum requirements,Then,we analyze their position in the textbooks,the number of different columns Combined with these six parts of knowledge points in different stages of the way of convergence,It is the analysis of the gap between textbook content and curriculum requirements,and students' receptivity.Find out the advantages and disadvantages of cohesion,summarize the characteristics of each part,and give corresponding teaching suggestions,Secondly,through the cohesion analysis of the six parts of core knowledge,we summarize the general characteristics of the cohesion of the content of middle school chemistry textbooks : The systematic logic of the course content is strengthened,the depth is enlarged,the difficulty is properly deepened,and the students' thinking,ability and values are emphasized,and the overall connection is good,But for the "chemical bond" part,there is a fault in the content of compulsory education between junior middle and high school.Finally,according to the characteristics of cohesion,it puts forward some reference suggestions for front-line teacher teaching: First,we must transform educational concepts and adapt to the Compilation Characteristics of new textbooks,and we should have cohesion awareness in teaching;Two,we need to renew teaching methods,attach importance to knowledge linking teaching and cultivate students' comprehensive ability;The three is to strengthen the guidance of learning methods,to develop a good habit of learning new.To sum up,the purpose of this study is to promote more recognition of the cohesion of Chemistry Textbooks between junior high school teachers and students,It can make the cohesion teaching of junior high school more smoothly,and it can provide some references for the teaching and textbook compilation of front-line teachers. |
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