The Practice Of Problem Enriched Instruction In Chemistry Class Of Junior High School

Problem Enriched Instruction(PEI)is an effective teaching method based on class,and it can promote the development of the overall teaching progress by constantly asking students questions.PEI can bring great advantages to the teaching work,let the students study better,ensure the students' learning efficiency and also let the students realize the limits of learning.Compared with the traditional teaching,PEI has a deeper grasp of the class' s contents.It can timely understand the development progress of teaching,and on this basis,it can imperceptibly affect students' learning habits.In the real learning process,students can realize that it is necessary to ask for help in time when they meet difficulties of learning and cultivate lifelong learning habits.This study focuses on PEI and selects junior high school chemistry as the research object.Firstly,it's the students' first time to study junior high school chemistry,so basically all students has the same foundation,which is convenient to understand different students' learning ability and promote the comprehensive development of teaching.Secondly,junior high school chemistry is only studied for one academic year.In the actual research process,we can fully understand the whole process of PEI of junior high school chemistry.Based on this understanding,this study makes further research on the basis of fully understanding the relevant theories of PEI.And on this basis,the writer understands the relevant educational theories,and has a comprehensive understanding of the PEI,such as constructivism,humanism,lifelong education theory,cultural teaching theory.Those theories provide important theoretical guidance for PEI research.On this basis,a questionnaire survey is finished among teachers and students in Zunyi No.4 middle school.Through the actual survey results,the writer found that there are some problems among students and teachers in the process of PEI.Aiming at these problems,this study deeply discusses the various factors of restricting the development of PEI,as well as the root causes of these problems.Also,the study formulated a two-tier PEI strategy for students and teachers,and designed three modules of junior high school chemistry Teaching cases,which provide some theoretical and practical cases for junior high school chemistry teaching.By doing so,it can help the junior high school PEI more effectively.It can further promote the PEI of junior high school chemistry,understand the related problems of PEI in junior high school chemistry class through questionnaire survey.Taking this as the solution direction of practical problems,the study can promote a further progress in the case design of PEI,and provide some case designs for the PEI of junior high school chemistry.