| Chemical Equilibrium is located in the chemical reaction rate and chemical equilibrium chapter of the ordinary high school textbook "Chemical Reaction Principles" of the People's Education Edition.It has always been a difficult point in high school curriculum teaching.The content of chemical balance is abstract and theoretical,with complex knowledge points and many secondary concepts,and is closely related to many chemical production processes.In the examination,not only students' problem-solving ability,but also the development of students' cored literacy should be examined which puts forward new requirements for teachers' teaching and students' learning.Due to the lack of effective teaching methods,students have not established an intuitive cognitive model of chemical balance,resulting in a series of mythical concepts.Therefore,how to formulate effective teaching cases and evaluate their teaching effect is the focus of this research.This paper firstly explores the differences between chemical equilibrium research at home and abroad through literature research,and determines new research goals;then,under the guidance of core literacy,using information-based teaching software and innovative experiments to design teaching cases of "combining real and virtual".In the empirical research part,two classes of similar levels in a high school in Qingbaijiang District were randomly determined as experimental class and control class.The research results show that the teaching case can effectively develop the target level of students' core literacy,and can be used as a reference to teaching practice.This research is conducted through literature analysis,interview,observation and pen-and-paper testing.The research content is divided into the following six parts:The first part introduces the research background of chemical equilibrium,understands the difference between domestic and foreign research status,summarizes the research value of predecessors,and defines the research direction,which lays the foundation for subsequent research.The second part,based on the current situation analysis,clarifies that the goal of this research is to use information-based teaching software and innovative experiments to design teaching cases,help students understand the concepts of chemical balance,and develop the core literacy level of chemistry.Then determine the research method,draw the research frame diagram and summarize the research significance.The third part mainly establishes the theoretical basis of the research and defines the related concepts of "chemistry teaching situation","combination of real and virtual" and "information-based teaching".The fourth part are to determine the teaching activities and core literacy to be researched through the comparison of textbook content,the analysis of curriculum standards and the results of interviews with front-line teachers.Use information-based teaching software and innovative experiments to design teaching cases of "combination of real and virtual","Chemical Equilibrium" and "Factors Affecting Chemical Equilibrium" to innovate teaching activities.The fifth part are mainly to carry out teaching practice and empirical research,and select two classes of similar levels of senior two for comparative teaching.Through paper-and-pencil tests,questionnaires,and classroom observation methods,the development of the core "literacy 2" and core "literacy 3" of the chemistry subject of students,as well as the quality of the actual teaching effect,are tested.The sixth part summarize the research and draws a conclusion: the use of information-based teaching software combined with innovative experiments to improve teaching activities can effectively develop students' "change ideas and balance thinking","evidence reasoning and model cognition" and other core competencies.In addition,this part also puts forward some teaching suggestions and also points in the deficiencies and areas that need to be improved on the research. |
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