Study On The Practice Of Nine-grade Chemistry Teaching From The Perspective Of Model Cognition

Model cognition is an important aspect of the core system of chemical discipline.In the ninth grade,chemistry teaching is mainly embodied in the process and method of 3 dimensional target.In this paper,the model knowledge of "compulsory education stage chemistry curriculum" and the ninth grade chemistry textbook of PE is fully excavated from the perspective of "model cognition",and the following strategies are used to reflect the model cognition:Comprehension model,application model,evaluation model.Implementation of teaching design and practice on "process and method" target whole,in part interrelated focus on methods of obtaining knowledge while providing a reference for the ninth-grade chemistry students to develop core literacy.This paper is divided into four parts:Part I:Overview of the study.By introducing the knowledge of model knowledge in the new curriculum standard and the statistics of the model of the ninth grade textbook model,it is important to highlight the knowledge of the model in chemistry teaching.Then,this paper makes an overview about the background,question,method,significance and ideas of the research.Part II:Theoretical Studies.Based on the research of model cognition at home and abroad,the core concepts in the research are defined,and the model knowledge is divided into chart model,symbol model and algebra model according to the different forms of knowledge.This paper analyzes and expounds the basic connotation,basic elements,theoretical construction and design principles of chemistry teaching in the ninth grade under the model cognitive perspective.Part III:teaching practice and investigation.This paper chooses the high-frequency model knowledge points from the ninth grade chemistry teaching material,and classifies the teaching design,practice and evaluation under the guidance of the above theory,and records the whole practice process,using the questionnaire survey method and the interview method to get out of the empirical conclusion.Part IV:Findings and Prospects.Summarize the whole study,reflect on the shortcomings,and forecast the application of model cognition in the ninth grade chemistry.