Study On The Construction Of Students' Particle Conception In The Teaching Of "Chemical Reaction Principle"

Knowledge-based teaching has always been the main stream of school education,and the purpose of the new curriculum reform is to cultivate students' core quality.Macro-identification and micro-analysis are the concrete manifestations of core quality.The construction of students' particle conception contributes to the formation of core quality.At the same time,the content of the Chemical Reaction Principle module in the version published by Jiangsu Education Publishing House(hereinafter referred to as JEPH)helps students to construct the particle conception.The theme of this paper is the construction of students' particle conception during the teaching of Chemical Reaction Principle published by JEPH.On the basis of literature review and questionnaire survey,this paper firstly discusses the teaching value of particle conception,mainly refers to the theory of constructivism and Bruner's theory of disciplinary structure and Learning Progressions theory.These complete theories are the solid foundation of the construction of particle conception.Then investigates the current situation of particle conception teaching in high school and puts forward the teaching strategies.Through the questionnaire survey,we can understand the present teaching situation of high school chemistry,and propose fact-based teaching strategies and suggestions.Then the paper focuses on the teaching design and implementation of particle conception in Chemical Reaction Principle published by JEPH.By analyzing the teaching standards and teaching materials of the new curriculum,the connotation of the particle conception in the teaching module is excavated,the reasonable teaching goal and the teaching design are determined,and the teaching case based on the construction of the particle conception construction is put forward.After 60 hours' classroom teaching practice,we obtain the final exam results of both the control classes and the experimental classes,which are contributing to the result of particle construction teaching research.Finally the author raises an innovation point and the shortcomings to guide the future study in this field.