Research On The Teaching Practice Of Problem-based Instruction Based On The Cultivation Of Senior High School Students' Chemistry Key Ability

High School Chemistry,as a required course in high school,has the important mission of training qualified citizens.The outline of the national medium-and long-term education reform and development plan(2010-2020)clearly points out the basic idea that education should focus on ability,optimize knowledge structure,enrich social practice and strengthen capacitybuilding,The 2017 Chemistry Curriculum Standard for General High Schools States that chemistry core literacy refers to the necessary character and key ability that can meet the needs of life-long development and social development,The 2018 National Higher Education Entrance Examination outline puts forward the idea of "one core,four levels and four wings" for the college entrance examination,and clarifies the contents of the four levels of examination: "necessary knowledge,key abilities,discipline attainment,and core values.",As one of the important contents,we can see that the cultivation of key ability is the long-term goal of education reform."Ability" has also become an important guiding ideology for all kinds of test questions.As an important component of core literacy,how to train students' chemistry key ability in classroom teaching is an urgent problem to be solved in educational practice,it is also the focus of educational research and the central issue of educational reform.The theoretical basis of this research paper is: Learning advanced theory,cognitive classification theory,constructivist theory,combined with High School Chemistry Curriculum,taking the ability of information acquisition and processing,the ability of evidence identification and reasoning,the ability of model construction and cognition,the ability of experiment operation and inquiry as the key elements of high school chemistry ability,through the investigation and analysis of chemistry classroom teaching and students' key abilities through the distribution of questionnaires and pre-test questions,the research and practice of problem-based instruction based on the cultivation of senior high school students' key abilities in chemistry are carried out by combining theory with practice,The main contents of this thesis are as follows:The first part: through reading and analyzing the domestic and foreign literature related to the chemistry key ability,elaborated this research background,the research present situation and the research design,the research design includes the research goal,the research content,the research mentality and so on.The second part: Study the related works and Literature,define the key ability,chemistry key ability,question guidance and other related concepts,and determine the main theoretical basis of this study.The third part: through issuing the questionnaire related to students' chemistry key ability,and using SPSS25.0 software to analyze the data of the returned questionnaire,to understand the current situation of students' chemistry key ability.The investigation was made on teachers' cognition and students' cultivation of chemistry key ability through questionnaires and interviews.Based on the results of students' questionnaire,teachers' questionnaire and interviews,the main problems and the factors affecting the development of senior high school students' chemistry key ability are summarized.The fourth part: According to the students' chemistry key ability training present situation,the existence main question and so on aspect,proposed based on the high school chemistry key ability training classroom teaching strategy.The fifth part: On the basis of the first four parts,the teaching strategy and the teaching model of "problem-based instruction" based on the cultivation of the key ability of chemistry in senior high school are applied in the teaching practice,a one-semester teaching practice study in Class 21,senior year,a High School in Nanning.The sixth part: The use of test questions,interviews,observation of key chemical ability of students before and after the comparison and evaluation,and to test the effect of practical research,it is verified that the class based on the cultivation of chemistry key ability in senior high school has certain effect on the cultivation of students' chemistry key ability.The seventh part: mainly elaborates through to the chemistry key ability investigation,the practice research and the reflection,obtains this research conclusion and the existence insufficiency,and proposes to this topic research prospect.In this paper,the research on the cultivation of key chemistry ability of senior high school students has achieved certain results,based on the cultivation of key chemistry ability,"problembased learning" teaching model needs to be further improved and developed,research conclusions need to be further tested.It provides a reference for strengthening the cultivation of students' key ability in chemistry.