Improvement And Optimization Of High School Chemistry Teaching Experiment And Its Practice

Experiments are the basic method for discovering and demonstrating chemistry studies.Chemistry experiments play an important role in the process of cultivating the core literacy of high school students.Experiments in high school chemistry need to consider the following factors:whether the phenomenon of the experiment is obvious;whether the experimental device is reasonable;whether the experiment can highlight the teaching focus;whether the experiment is green and environmentally friendly;the proportion of time the experiment is in the classroom and the safety of the experiment.From the perspective of the design concept of the textbook,the content of the chemistry experiment is developmental.The 2017 edition of the high school chemistry curriculum standard clearly stated that the chemistry textbook is a dynamic curriculum resource,which reserves space for teachers to select and integrate the teaching content to facilitate teachers'creative use of the textbook.High school chemistry experiments can be divided into two categories:students must do experiments and teachers' teaching experiments.This article takes the People's Education Edition of high school chemistry compulsory teaching experiments as the research object.Compare the teaching experiments in the new and old textbooks,and analyze the modification and changes of the experiments in the new textbooks(2019 version).Through the analysis of the new textbooks and new curriculum standards for the requirements of high school,based on the recommendations of the college entrance examination,summarize the ideas of experimental improvement.By referring to the relevant literature,the three teaching experiments were improved in accordance with the teaching requirements.The teaching design was carried out according to the improved experimental plan and applied to the teaching practice.The feasibility of the improved experiment was verified by the test of experimental questions.This article is divided into five parts:The first part explains the reasons for selecting the topic,and sorts out the current status of the experimental teaching and experimental improvement at home and abroad.The position and function of chemistry teaching experiment in chemistry teaching are analyzed,and the research purpose,significance,research ideas,research content,and research methods are introduced.The second part is based on the curriculum standards and core literacy to elaborate teaching and experiment improvement.Through consulting the literature,the theoretical support based on the principles of green chemistry theory,constructivism theory,STSE theory and experimental improvement has been inspired by the idea of experimental improvement.The third part compares the experiments in the new and old textbooks,and counts the types of experiments and academic requirements in the new textbooks.A statistical analysis of the test questions in the national chemistry test questions of the National College Entrance Examination in the past 5 years was carried out.Questionnaire surveys and interviews were conducted with students and teachers respectively to clarify the current status of "teaching experiments".Based on the above analysis,establish the dimension of experimental improvement.The fourth part selects three representative teaching experiments according to the dimension of the proposed experiment improvement.Analyze the status,function,teaching purpose and teaching focus of the three experimental projects,and formulate improvement plans.The fifth part is to design and practice the improved teaching experiment in the classroom.Select one of the experimental improvement teaching cases to test the high school students before and after improving the experimental teaching.The test results were processed with Excel software and SPSS 23.0,and the results were analyzed to verify the feasibility of the improvement plan.The sixth part draws the conclusion that improving the teaching experiment can effectively inspire students 'thinking and help to cultivate the students'core literacy,and summarizes the teaching suggestions.The purpose of this thesis is to analyze and analyze high school chemistry teaching experiments,make suggestions on how to improve and innovate classroom teaching experiments,strengthen students' understanding of chemistry knowledge,and then cultivate their core qualities.Provide reference teaching models and teaching ideas for the first-line teachers' experimental teaching.