Case Study And Practical Research On The Integration Of Chemistry History Into High School Classroom

Throughout the development history of chemistry,from the initial pottery and metallurgy to the invention and application of paper and glass,it can be seen that the generation and development of chemistry are closely related to human life.The history of chemistry records the history of human scientific development,which has rich educational value.Integrating the history of chemistry into high school teaching can provide students with a complete chemistry learning experience.At present,the chemical study of the history is mostly based on the theoretical study,practice study is less,the study of chemistry history teaching resources development is inadequate,and various chemical history data and different forms,prepares a lesson teacher difficult to in the limited time will be mad required in the form of historical data into the classroom,as a result,There are few classroom teaching designs in senior high schools based on chemical history.What this subject studies is that according to the requirements of the new curriculum standards and teaching objectives,the historical materials of chemistry are selected specifically,and the chemistry classes are precisely matched,so as to give full play to the educational value of the history of chemistry.By analyzing the development history of chemical history education at home and abroad and the existing teaching research on chemical history,this paper expounds the research purpose,research method,research task and research significance of this subject,and defines the three core concepts of chemical history,educational function of chemical history and case development.Then,on the basis of system theory,information theory,cybernetics,constructivism theory and cognitive development theory,the compulsory history of chemistry in the humanities edition was sorted out from two aspects: content and quantity.Chemical history accounts for a relatively small total of 9;The history of chemistry is simple and the pictures are relatively abundant,7 in all.The material of chemical history contains the exploration process of scientists,the achievements of chemical research and the contribution and influence to society,and contains the function of common sense,process and method,and moral education.The questionnaire survey of 580 students and 20 teachers in qixian high school,qixian hope high school and weishi no.3 middle school shows that 70.8% of the students were very interested in the history of chemistry.Students mainly obtained knowledge of chemical history through teaching materials and teacher stories.60% of teachers believe that the teaching design combined with the history of chemistry helps students to master the basic knowledge,but only 10% due to tight schedules,less college entrance examinations,time spent on development cases,and lack of systematic knowledge of their own chemical history.Teachers will actively develop teaching cases that incorporate the history of chemistry.In order to encourage front-line teachers to actively develop teaching cases incorporating chemical history,the author proposed four principles of matching,profound,scientific and developmental selection of chemical history materials,and constructed four strategies for the development of chemical history materials.Around the basic knowledge,reflect the common sense function of the material;Elaborates the development course,manifests the material process and the method function;Focusing on social hot spots and reflecting the moral education function of the materials,the library of chemical history materials for compulsory chemistry of the people's education edition was established to save teachers' preparation time and promote educators to develop more cases of chemical history.In order to test the feasibility and effectiveness of teaching cases,the four chemical history contents of phlogisticin theory,oxidation theory,chemical valence theory and ionization theory were selected from the material library,corresponding to the two sections of REDOX reaction and the ionization of acid,alkali and salt in aqueous solution in the textbook,and the teaching cases of chemical history were developed.In order to evaluate the content of "ionization of acid,base and salt in aqueous solution",class 7 and class 8 of the first grade of qixian hope high school were taken as the research objects,and questionnaire survey and test were conducted on the teachers and students.(1)in terms of common sense,the score of the experimental class is 0.313 points higher than that of the control class,indicating that the integration of chemical history can help students clarify the causes and effects of knowledge,increase the breadth and depth of knowledge,and at the same time facilitate teachers to find out the key points in teaching;(2)in terms of process and ability,the score of the experimental class is 3.095 points higher than that of the control class,indicating that the integration of the history of chemistry can help students master the method of scientific learning and cultivate the spirit of questioning and exploring.(3)in terms of emotion,the score of the experimental class was 1.405 points higher than that of the control class,indicating that the integration of the history of chemistry can stimulate students' interest in learning chemistry and help them experience the joy of learning.(4)in terms of moral education,the score of the experimental class is 2.659 points higher than that of the control class,indicating that the integration of chemical history can exercise students' dialectical thinking,cultivate students' rigorous and realistic scientific attitude,and enhance students' awareness of environmental protection.(5)the average score of the experimental class was 9 points higher than that of the control class,which was 7.77 points.