Research On The Design Of High School Chemistry Teaching Based On Model Construction

In the process of scientific development,models play an important role in the establishment of theories and the test of experiments,which is an important way of theoretical development,and scientific models are also important results of science.As a scientific way of thinking and learning,model construction has been paid more and more attention in chemistry teaching and is an important way to cultivate students' core accomplishment in chemistry.On this basis,the thesis takes the high school chemistry teaching design that promotes students' cognitive development,thinking progression,ability improvement and quality cultivation of model construction as the research purpose,and divides it into theoretical research and practical research as the research contents:In the part of theoretical research,literature research is used to summarize and analyze the existing researches on models,model construction and modeling teaching at home and abroad.This paper analyzes the specific requirements of high school chemistry knowledge system and curriculum standard with model construction as the center,proposes the teaching design strategy based on model construction,summarizes the design elements of modeling teaching process,forms the design idea of modeling teaching process,namely "seven-step modeling method",and finally integrates and designs the teaching design model based on model construction.In the part of practical research,the teaching design model based on model construction is applied,and the modeling analysis of "REDOX reaction(the first class hour)" and "chemical equilibrium constant" is carried out,so as to form and implement the teaching design case of modeling.The semi-structured interview method was used to measure the students' mastery degree of modeling learning,and the students' acceptance and mastery level of modeling learning were diagnosed and analyzed based on the interview results.The results show that the model-based instructional design strategies,elements,ideas and models proposed in this paper have a guiding effect on the teaching design of senior high school chemistry,and the implementation of the two modeling instructional design cases has played a certain role in promoting the development of students' cognition,thinking,ability and quality related to model construction.