Research On Application Of Prototype In Chemistry Teaching During Middle School

With the development of the curriculum reform of basic education,more and more attention has been paid to the principal position of students.At the same time,chemistry itself has the characteristics of understanding substances from the microscopic level and describing them in symbolic form,so chemistry teachers should pay more attention to students' real world and attach importance to various prototype experiences in the real world.This paper mainly on the prototype theory as the theoretical support of research,through review the prototype category theory and the theory of prototype enlightenment a clear thought and view of prototype theory,and further analyzes the features of the prototype in chemistry teaching,and develop a prototype teaching ideas,including prototype selection,prototype,the prototype to explore the four stages and prototype migration.This paper analyzes the prototype of junior high school chemistry textbooks in the two editions of lu jiao version and ren jiao version,and finds that there are differences in the processing and arrangement of the prototype in the two editions.In order to verify the prototype's influence on teaching effect,this paper chose "molecules and atoms" as the teaching content,teaching design and teaching practice,to carry out immediate posttest and delayed posttest,the results show that the experimental classes than that in comparative classes achievement effect is remarkable,the understanding of the concept of teaching and learning based on prototype significant help.This paper consists of eight parts,the main contents are as follows:The first part discusses the reasons for choosing the topic.The second part summarizes the research on prototype theory,including prototype category theory,prototype heuristic theory and prototype's application in teaching.The third part,research purpose and task.The fourth part expounds the connotation of prototype,the characteristics of prototype in chemistry teaching,and the basic ideas of prototype-based chemistry teaching.In the fifth part,the author analyzes the prototype of chemistry teaching materials in junior middle school.The sixth part,instructional design.On the basis of studying literature,teaching materials and course standards,a "molecular" teaching design is designed to prepare for the implementation of teaching.The seventh part,teaching practice research.Samples were selected for teaching.According to the questionnaire,statistical analysis was conducted with the help of SPSS22.0 to obtain the results.The eighth part,research conclusion and prospect.Summarize the conclusions and put forward the further problems to be solved in the research.