Structuring Of High School Chemistry Knowledge Based On Discipline Core Literacy Instructional Design And Practice ——Take Metals And Their Compounds For Example

The Chemistry Curriculum Standards for General High Schools(2017Revision 2020)puts forward the main purpose of developing the core literacy of chemistry and emphasizing the development of "literacy-based" teaching.Knowledge-structured teaching classifies knowledge according to specific ideas.Make scattered and isolated knowledge into an interconnected organic whole,systematize and structure scattered knowledge,help students establish a systematize knowledge system,effectively solve the problem of scattered knowledge points in current chemistry teaching,and improve teaching efficiency.Implement the cultivation of the discipline core literacy,and reflect quality for literacy-based the teaching concept.This paper analyzes the current situation of core literacy,knowledge structure,teaching and research of metal and their compounds,and defines the concept of knowledge structure.Through the student questionnaire survey and teacher interview method,we can understand the teaching and learning situation of metal and its compounds knowledge in grade one,and propose the teaching strategy of metal and its compounds knowledge structure.Build reasonable knowledge network by drawing knowledge structure,use problem situation to promote student knowledge systematization;build knowledge network through micro-video to form a complete knowledge system.Under the guidance of knowledge structured teaching strategy,with "sodium,iron and its compounds" as the content,specific knowledge structured teaching design,using knowledge structured to assist classroom teaching,and teaching practice in the first grade of a key middle school in Hohhot.After the practice,the teaching effect of the experimental class and the control class was compared and analyzed,and the teaching design was improved according to the feedback of teachers and students,so as to help students to construct a knowledge system with "sodium and its compounds" and "iron and its compounds" as the core.This paper analyzes the current research status of core literacy of chemistry,knowledge structuring,teaching of metals and their compounds,and defines the concept of knowledge structuring.Through the method of student questionnaire and teacher interview,to understand the teaching and learning of knowledge of metal and their compounds in first grade,puts forward a structured teaching strategy of metal and its compounds knowledge structure.Building reasonable knowledge network by drawing knowledge structure,and use problem situation to promote students' knowledge systematization.Under the guidance of the knowledge structured teaching strategy,with "sodium,iron and its compounds" as the content,the specific knowledge structured teaching design,and the teaching practice in the first grade of a key middle school in Hohhot.In practice,according to the feedback of teachers and students,the teaching design is improved to help students to construct a knowledge system with "sodium and its compounds" and "iron and its compounds" as the core.After the practice,collect factual evidence through the teacher interviews,Students get pre-test and post-test scores,and students' interviews,implement the knowledge-structured teaching model for the achievement of students' core literacy abilities,and analyze teaching materials,learning conditions and teaching according to the practice results.Focus on difficult points and striving teaching stimulates students' interest in learning chemistry,improves students' initiative and enthusiasm in learning chemistry,which cultivates students 'ability of combination,arrangement and induction,and improves students' core quality of subjects.At the same time,the development of knowledge structured teaching broadens teachers' ideas on the teaching design of metal and its compounds,enriches the connotation of structured teaching,and provides information for further research on structured teaching.