Research On The Design And Practice Of Problem-based Blended Learning In High School Chemistry

With the continuous progress of information technology,the traditional cramming education model of students can no longer meet the requirements of modern society for talent development.Under this background,a new teaching mode-PBL came into being.PBL is a question-based teaching mode,but the existing PBL also has some shortcomings in practical application.Based on this,the integration of question-based learning and mixed learning is carried out to build a question-based mixed teaching mode.This model combines the advantages of hybrid learning with traditional problem-based learning.This study consists of six chapters.The first chapter is introduction,points out the background of this study,we propose,after studying the related literature at home and abroad,the research emphasis in the PBL and hybrid teaching mode,research results and some problems in the process of implementation in our country are summarized,and then from the two aspects of theory and practice in this paper,the research significance are summarized,at the same time points out the innovation of this study.The second chapter is a summary of related with theoretical basis,this paper based on the problems of learning and the concept and characteristics of blended learning is defined,such as the learning theory of constructivism,China unicom,illustrates the situational learning theory and cooperative learning theory,provide theoretical guidance for the next study,indicate the research direction,and theoretically analyzed the feasibility and advantages of the combination.The third chapter is the construction of mixed learning model based on problems.First,it expounds the principles followed by the construction of the model.Based on professor huang ronghuai's "three-stage" mixed learning model,it constructs a mixed learning model based on problems by combining the characteristics of chemistry and the requirements of the new curriculum standard.The fourth chapter is the concrete case implementation,is one of the research emphases of this paper.Taking iron and its compounds and chlorine enriched in seawater as examples,this paper carries out teaching design according to the teaching model constructed above,and then applies it to the actual teaching to form two specific teaching cases.Chapter 5 for the analysis of the teaching effect and the implementation proposal,this paper consulted GuanEn Beijing professor in his book "hybrid teaching effectiveness evaluation research and practice in the proposed hybrid teaching evaluation questionnaire,on the basis of the student questionnaire,the effect evaluation of teaching object,nanchang a key senior high school the students of class(5)a questionnaire,interview to extract some classmates,and analyzed the result of the questionnaire interview,on the basis of this is presented based on the problems of hybrid implementation Suggestions in teaching in high school chemistry teaching.The sixth chapter is the research conclusion and insufficiency.The results show that most students are satisfied with the learning effect of the problem-based hybrid learning mode,which has relatively good effects on the acquisition of knowledge,the improvement of comprehensive ability,the cultivation of humanistic attitude and etc.This study discusses the application of the problem-based hybrid learning model in high school chemistry teaching,which has certain feasibility,teaching practicality,and application value.