The Application Research Of PBL Teaching Mode Assisted By Mind Map In Chemistry Review Class Of Senior Middle School In The First Grade

With the development of the times,it is necessary to cultivate well-rounded talents.Therefore,according to the Chemistry Curriculum Standard of Common High School(2017 Edition),teachers should carry out teaching activities with students as the main body,set up problem situations,establish the relationship between knowledge and experience of learning and personal life,arouse students'interest,strengthen students' learning autonomy,and change students' learning methods,make teaching more hierarchical.The model of problem-based learning can help students to ask and analyze problems through real situations,and cultivate students' motivation of exploring chemical life actively based on this process,and then cultivate students' awareness and ability of communication and cooperation in the process of imperceptible influence through group cooperation;In this process,mind map is used to understand the knowledge system before class.It can be used to sort out complicated knowledge in class,and also can be used to summarize and review complicated knowledge after class.The specific contents of this paper are as follows:Part ?-Introduction:It analyzes the application and research status of PBL teaching mode and mind map at home and abroad,understands the research methods,shortcomings and development trend of PBL teaching mode in various researches,refines and clarifies the topic selection based on the research background,and then puts forward the research purpose and significance,research object and content,research methods and ideas,in order to lay a solid theoretical foundation for this study.Part ?-Theoretical research:By referring to relevant literature,define the concept of PBL teaching mode and mind map,analyze the related concepts,explain the theoretical basis of the constructivism theory,the contextualism theory,the connectionism theory and the double coding theory,and finally clarify the evaluation system.Part ?-Practical investigation and research:To understand the current situation of Chemistry Teaching in the internship school,to conduct a pre-test questionnaire survey on the research objects,to analyze the reliability and validity of the questionnaire by using SPSS software,and finally to conduct a visual analysis of the data of the questionnaire by using pie chart and bar chart,so as to lay a foundation for the teaching case design of PBL teaching mode assisted by mind map.Part ?-Case design and practice:On the basis of theoretical research and practical investigation,the teaching process of PBL teaching mode assisted by mind map is constructed based on the principles of teaching design.Then the teaching materials are analyzed,"sodium and its oxides" and "sulfur and its compounds" are selected as the teaching contents.The teaching design is carried out in combination with the teaching objectives and students' learning conditions,and finally put into practice.Part V-Practice evaluation and analysis:According to the practice process and the data obtained from practice,the PBL teaching results assisted by mind map are reflected and summarized.Through the teacher interview survey,student post-test questionnaire survey and test results analysis,it can be concluded that PBL teaching assisted by mind map is effective according to the actual situation,which can improve students' learning effectiveness to a certain extent.However,if we want to test further influence of PBL teaching assisted by mind map,we still need more practice and exploration.Part VI-Research Summary:Firstly,it is feasible and effective to implement PBL teaching assisted by mind map according to the actual situation;Secondly,the situation created by teachers can stimulate students' interest in learning;Thirdly,this model can help to change students' learning style and develop their ability of cooperation,communication and problem solving.Finally,the paper puts forward the research reflection and prospect.The results show that the PBL teaching mode assisted by mind map can promote students' learning effect to a certain extent.However,due to the short time of this practical research and the small number of practical samples,it needs to be further verified and improved.