Research On Improvement And Application Of Chemistry Experiment Teaching In Senior High School

As the most intuitive research method of chemistry,experiment has its unique position in middle school teaching.To let students understand the scientific thinking,learn to study the basic methods of chemical substances,have curiosity about chemistry,improve the students' scientific literacy,it is required that chemistry teachers must make good use of the chemical experiment teaching this weapon.Especially since the beginning of the new curriculum reform in 2017,five core qualities of chemistry discipline have been specifically proposed: macro identification and micro analysis;Change idea and balance thought;Evidence Reasoning and Model Cognition;Consciousness of scientific inquiry and innovation;Scientific spirit and social responsibility.The core quality of chemistry strengthens the guidance of experimental teaching and evaluation,and pays more attention to students' spirit of inquiry.First of all,this paper uses teacher interviews to understand the classroom model of school experiment teaching,and then conducts a questionnaire survey on students to understand students' understanding and interest in chemical experiments,their mastery of experimental skills and expectations for improving chemical experiments.Through the analysis of the results of the survey,found that can recognize the experiment and the cooperation between teachers and students to explore the importance of chemical subject thinking training,but the teacher is limited by a heavy teaching task and teaching conditions,combined with the experiment course teaching design can reference case is less,makes the teachers in the reform of experiment teaching and how to stimulate students interest in learning and so on also has some deficiency,the teaching effect is not very ideal.To break the experiment teaching of middle school students' participation is low,the lack of independent thinking and exchanges and cooperation in stalemate,in this paper,the experimental part of the chemical compulsory 1 teaching material analysis,screening of the "sodium carbonate and sodium bicarbonate in the identification of","the nature of the sulfur dioxide","copper with nitric acid reaction" as the breakthrough point of the experimental teaching to improve the three experiments.Focusing on the improvement of experiment and the reform of pre-class task grouping experiment teaching mode,three teaching cases are designed.By using the comparative experiment method,after a semester of teaching practice,it has been proved that the experimental teaching improvement mode has played a positive role in improving the experimental teaching effect,enhancing students' chemistry performance,enhancing students' participation,diverging students' thinking,improving students' ability to collect data and experimental exploration and innovation.The improvement of experimental teaching has achieved initial results and is worth further study.Also found that the teaching model needs teachers prepared a lot of work ahead of time,increase the workload of teachers,and not all experiments are needed to improve experimental teaching,the experiment teaching mode does not apply to the first chapter,the second chapter of the quantitative experiment and the preparation of experiment,more suitable for the predominantly qualitative experiment in the third chapter,the fourth chapter experiment content.This paper is composed of five chapters: The first chapter is the introduction,which mainly discusses the basis of the topic selection and the current research situation at home and abroad,and lays the keynote and points out the direction for the research content and methods of the full text.The second chapter is the definition and theory of the core concept,which scientifically explains the concepts of "high school chemistry experiment" and "experiment teaching",and expounds the constructivism learning theory,cognitivism learning theory,humanism learning theory and audio-visual teaching theory.The third chapter is the investigation of the current situation of chemistry experiment teaching,which explains the design of questionnaire and the ability of students to solve experimental problems,and summarizes the current situation of chemistry experiment teaching through the investigation.The fourth chapter is the experimental teaching improvement cases and applied research,including the principles and direction of experimental teaching improvement,specific teaching case design and application effect analysis.The fifth chapter is the summary and reflection part,including the evaluation and suggest of improving experimental teaching and the reflection of the full text,in order to provide reference for the research in related fields.