Research On Virtual Experiments Assisted Chemistry Experiments Teaching In Middle School

With the rapid development of science and technology,the application of modern information technology in education and teaching has become the current trend of educational innovation and reform.The traditional chemistry experiment teaching in junior middle school is restricted by many factors,such as backward experimental facilities,large class size,low teacher-student ratio and other objective factors.The differences in students' development level,teachers' ability to design and implement experimental teaching and other subjective factors.In junior middle school chemistry teaching,there are many problems such as insufficient experimental teaching time and poor teaching effect,which seriously restrict the cultivation of students' scientific inquiry ability.The emergence of virtual reality technology breaks through the limitation of time and space,and the application of virtual experiment technology to junior middle school chemistry experiment teaching can solve these problems appropriately.This research will be divided into five parts:The first part is introduction,for domestic and foreign literature,understand the production of auxiliary virtual experiment teaching system,the development and the research status quo,combined with the author's practical teaching situation to determine the content of this study,the investigation of virtual experiment aided chemical experiment teaching present situation and the teaching practice,analysis and solve problems.The second part is the definition of the concept and the theoretical basis of the research.Based on the independent learning theory and the constructivist learning theory,this paper studies the use of virtual experiments to assist experimental teaching,and determines the three principles(applicability,flexibility and scientificity)that should be observed in the actual teaching.The third part is the investigation and analysis of the status quo of the use of virtual experiment in chemistry experiment teaching.Firstly,the types of junior middle school chemistry experiments are analyzed to determine the scope of virtual experiment teaching.Secondly,through the interview with the school chemistry teachers to understand the situation of teachers,through the interview with teachers to analyze the status quo of virtual experiment teaching software,to understand the advantages and disadvantages of this teaching situation,to determine five typical virtual experiment assistant experimental teaching mode.Through the questionnaire survey to the students again to understand the students'views on virtual chemistry experiment teaching and confusion,to understand the school's current implementation of virtual chemistry experiment teaching,the current difficulties.The fourth part selects the confirmatory experiment "the laboratory production and properties of oxygen" and the exploratory experiment "the exploration of combustion conditions",combines the virtual experiment design teaching cases,and applies the virtual experiment auxiliary experimental teaching scientifically to the actual teaching.The fifth part is conclusion and suggestion.Through the above research,the author believes that virtual experiment software can assist junior middle school chemistry experiment teaching,reasonably apply strategies to optimize the effect of virtual experiment assistant experiment teaching,and analyze the possible misunderstandings of virtual experiment assistant chemistry experiment teaching.The author also puts forward some Suggestions on the problems found in the study:strengthening applied research and providing support rather than burden for teachers.The future research is prospected.