A Case Study On The Teaching Of "State Change"

Based on constructivist theory,Robert M.Gagné's learning theory and other teaching theories,this paper carries out a case study of physics experiment teaching in junior middle school.The content of the textbook chosen by the institute is chapter 5of 8^th grade physics-"State change".The whole paper can be divided into the following parts:The first part is the introduction,which introduces the research background,expounds the research purpose and significance,and introduces the research methods used in this paper.The second part is the theoretical basis of the research.This paper briefly introduces the theory of constructivism,Bloom's theory of mastery learning and Robert M.Gagne's theory of classification of learning results,analyzes what are the former concepts and teaching cases,and briefly expounds the forming process and writing methods of teaching cases.The third part is the junior high school physics"state change"teaching analysis.According to the curriculum standard,the teaching requirements of"state change"in junior middle school physics are analyzed.Through the interview with physics teachers in junior middle school,the paper summarizes the problems related to the experimental teaching of"state change".The fourth part combines the results of the first three chapters to study the case of experimental instructional design of"state change".The experimental teaching design of"state change"is based on the three-dimensional goal-oriented development,and the core accomplishment concept of physics is properly permeated in the teaching process.The fifth part takes"exploring the boiling law"as an example,before and after the implementation of teaching students questionnaire survey and exercise evaluation.Through the statistical analysis of the survey results and the evaluation results,we can understand the change of students'interest and ability,and the change of their knowledge,so as to provide a basis for the optimization of teaching design.The teaching design is optimized according to the Suggestions of audit teachers and the analysis of the teaching effect based on pre-test and post-test.The sixth part is the summary and reflection.Through the research of this paper,the author finds out the reasons for the difficulties in the implementation of students'experimental exploration activities,such as the lack of teaching equipment,inadequate lesson preparation by teachers,and insufficient use of students'curiosity about experiments.Based on the results of interviews with teachers and literature research,experimental teaching was designed to explore the law of boiling and the law of crystal melting process.Through the implementation and evaluation of teaching,the junior high school physics experiment teaching should pay attention to the following points:pay attention to the formation of students'physical concept,attach importance to scientific exploration,attach importance to students'participation,attach importance to the construction of physical concept,attach importance to the expansion of physical knowledge.The experimental teaching scheme proposed in this paper provides a practical scheme for junior physics teaching.