Application Of Micro-course In Chemistry Experiment Teaching Of Junior Middle School

At present,with the development of social information technology and computer network technology,there have been a lot of micro-products,such as micro-letters,microblogging,micro-fiction and micro-film words which are very popular among people.In teaching,a new means of teaching,micro-teaching has emerged,which brings certain changes to present teaching.Moreover,it has received very good results in the practical use and widely enjoyed by teachers and students.However,the study of micro-course is not applied to the teaching of chemistry so much.This paper explores the micro-course in the teaching of junior middle school chemistry,based on the constructivist learning theory.The author analyzes the related literature,expounds the development of the micro-course at home and abroad,and defines the concept of micro-course.Then,through the questionnaire of students and teachers,this paper analyzes the application of micro-course in chemistry classroom teaching.Combining the characteristics of micro-course and the characteristics of chemistry classroom teaching,the author forms the micro-course design table and design application flow suitable for junior middle school chemistry classroom teaching.The main contents of this paper are: the first chapter introduces the research background,purpose and significance of research and research methods;the second chapter is the concept of micro class definition and theoretical basis,focusing on defining the micro class and its characteristics,and explains the theory of constructivism,Bloom’s taxonomy of educational objectives and the theory of refinement and chemistry analyzes the characteristics of experiment in junior middle school.The third chapter discusses the status of micro class application in junior high school chemistry classroom teaching in a middle school in grade nine,class 2 is the experimental class and grade nine class 3 is the control class,questionnaire survey,and the teachers also conducted a questionnaire survey,found in the experimental teaching application of micro class main problems micro class application form is single;the lack of high-quality micro class resources;teachers of micro lesson enough to understand the limitations of the micro class;students’ learning.The fourth chapter isabout the design and application process of the junior high school chemistry experiment,including the design,development and application of the three aspects.The fifth chapter is to pep grade nine chemistry book "review" in the neutralization reaction experiment of autonomous learning and to "micro class metal chemistry" as a case.Through the analysis of the data after the implementation of the micro lesson,the students’ learning effect and the effect of the micro lesson to make a certain evaluation,and summarized in the teaching process of chemical experiments,the potential role of micro class.