| The "General High School Geography Curriculum Standards(2017 edition,revised in 2020)" clearly states that it is necessary to focus on the core concept of the subject and to make the curriculum content structured.With the curriculum goal from teaching fragmented knowledge points to focusing on the development of core literacy,the literacy goal calls for the reform of the original teaching design.In this context,teachers need to improve their teaching positions,go beyond the original requirements of simple knowledge points,change fragmented teaching,implement knowledge-structured teaching,and guide students to integrate isolated knowledge,on the basis of the geographic knowledge structure,construct a cognitive structure dominated by disciplinary thinking and methods,and truly realize the cultivation of the core literacy of the geographic discipline.Therefore,this paper examines the current situation of geography teaching in senior high school from the perspective of knowledge structured teaching and puts forward improvement strategies in order to provide reference for front-line teachers.The paper adopts literature research method,classroom observation method,comparative research method and questionnaire survey method.First,put forward the research background and research significance of this paper,sort out and analyze the related research on knowledge structured teaching at home and abroad,and determine the research content,methods and ideas of this paper on this basis.Secondly,it clarifies the concepts of "knowledge structure" and "knowledge structure teaching",and expounds the theoretical basis of high school geography knowledge structure teaching from the aspects of constructivism theory,cognitive structure theory and subject structure theory.Thirdly,it summarizes and summarizes the basic research on knowledge structured teaching in geography and other disciplines,preliminarily formulates the observation dimension of structured teaching in high school geography classroom,and then corrects and improves teachers on the basis of a large number of observations of geography classroom teaching.questionnaire.Fourth,it proposes an optimization strategy for the problems existing in the current situation,and takes "Population Migration" as an example to carry out a knowledge-structured teaching design.Finally,summarize the main research conclusions,innovations,deficiencies and prospects of this paper.Drawing on the existing research literature,this paper proposes three dimensions of observation of the structured teaching of geographic knowledge: teacher presentation,curriculum implementation and classroom question and answer.Under this observation framework,15 actual classrooms and 15high-quality teaching videos were carefully and systematically analyzed,and combined with the results of the questionnaire survey,it was found that: on the whole,the current high school geography teachers have a strong awareness of structured knowledge teaching,and In terms of the clarity of the structure of the blackboard writing,the problematization of the situation,the abstraction of principles from concrete knowledge,and the logic of classroom questions,there are still the following shortcomings:(1)In terms of teacher presentation,there are marginalized blackboard writing.In addition,teachers’ representation of knowledge is relatively simple.(2)In the aspect of curriculum implementation,the connection between the internal knowledge of chapters is neglected;Lack of situation creation;The overall presentation of new and old knowledge needs to be strengthened;Lack of infiltration of the thought and method of geography;Students’ subjectivity is not strong and lack of transfer training.(3)In the aspect of classroom question and answer,the question chain lacks gradient;The teacher’s answer lacks the re organization of students’ answer;Students have few summary and inductive answers and lack confidence in independent induction.Through further in-depth analysis and comparison,it is found that compared with high-quality classroom teaching videos,the actual classroom still has a lot of room for improvement in terms of the diversity of knowledge representation methods,the creation of situations,and the gradient design of problem chains.Combined with the questionnaire survey and individual interviews,the main reasons for the above problems are that students lack confidence in summarizing and innovating and questioning awareness;teachers lack theoretical reserves,insufficient lesson preparation,unspecific assignments for preview tasks,and weakening students’ subjectivity and other factors.Based on the research on the literature related to knowledge structured teaching,combined with the relevant problems and their causes found in classroom observation and questionnaire analysis,this paper puts forward the optimization strategies of geography knowledge structured teaching in Senior High School:(1)Using knowledge visualization tools to enrich the content presented by teachers;(2)Improve the preparation before class and improve the effectiveness of knowledge structured teaching;(3)Promote situational teaching activities and build a cognitive bridge between students and teaching materials;(4)Design advanced problem chain and create structured knowledge system;(5)Consolidate the achievements of knowledge structured teaching and cultivate structured thinking;(6)Strengthen their own theoretical study and implement the practical application of methods.The innovation of this paper lies in the innovation of the research conclusion.Through reading the literature,it is found that the current research on knowledge-structured teaching mainly focuses on mathematics,physics,chemistry and other disciplines,and there are few researches on knowledge-structured teaching in geography,and the existing research in geography lacks an investigation of the current situation.This paper adopts various research methods such as classroom observation,questionnaire survey and individual interviews to understand the problems existing in the current situation in many aspects,so as to propose targeted optimization strategies.Therefore,the research conclusions are innovative to a certain extent. |