Research On The Teaching Design Of "Chemical Energy And Thermal Energy" Based On Three Representations

Senior school chemistry textbook Chemistry 2(required)the first section of the second chapter of "chemical energy and thermal energy" is an important part of the knowledge of senior school chemistry knowledge ring system,this part occupies a very important position in the comprehensive utilization and the overall senior school chemistry test,to the Chemistry 2(required)and Chemistry 4(optional)is an important channel content.In this paper,based on the comprehensive analysis of "chemical energy and thermal energy" ontology,based on the related theories of the chemical characterization of the three theory,combined with the excellent teaching case of teachers of Harbin key provincial and municipal key school of chemical energy and thermal energy",were analyzed a lot of investigations and energy involved the teaching objectives,learning situation,teaching difficulties.On the basis of this,the author makes an interview with experts in the field of excellent chemistry teaching,and puts forward some suggestions to correct them.Finally,the teaching design of "chemical energy and thermal energy" which can better reflect the three representations is summarized.After that,the author summarizes the whole design process,and gives the relevant teaching suggestions.On the one hand,the paper sorted out the "chemical energy and thermal energy" related sites and entrance inspection point,clear all involved in the college entrance examination test center examination;on the other hand,choose the best teaching design case of 10 representative teachers,the author through comparison and analysis of the above two aspects of the design and implementation of the "chemical energy and thermal energy" existing knowledge questionnaire,using SPSS and EXCEL statistical correlation analysis,finally established the ideal plan.The results and conclusions of this study include the following three points:First,the teaching design of "chemical energy and thermal energy" based on the three representations will make the whole teaching process more smoothly,and the corresponding logic can be formed in the test center,which is helpful for the students to understand the "chemical energy and thermal energy";Second,the integration of the thought of the three representations can enhance the ability of students' micro representation;Third,from the perspective of the three representations of the design of "chemical energy and thermal energy" teaching,it help to promote the formation and improvement of the corresponding knowledge system.