A Lesson Study Based On The Concept Of "Three Teachings" And "Situation Problem" In Mathematics

In April 2022,the Ministry of Education officially promulgated the "Mathematics Curriculum Standards for Compulsory Education(2022Edition)",which added core literacy to the curriculum objectives and further elaborated the connotation of core literacy as "three skills".Therefore,we urgently need a practical and feasible way to cultivate students’ core literacy."The ’Situation Problem’ teaching of mathematics in primary and secondary schools,which won the first prize of the National Teaching Achievement Award for Basic Education,is one of the effective ways.Based on this,this study mainly studies the following four issues:(1)’Three Teachings’ and ’Situation Problem’ in mathematics;";(2)The basic process of lesson study based on the teaching concepts of "Three Teachings" and "Situation Problem" in mathematics;(3)Based on the above concepts and processes,how to design the "Pythagorean Theorem";(4)Through the study of the "Pythagorean Theorem",a strategy for conducting case studies based on the "Three Teachings" and mathematical "Situation Problem" teaching concepts is proposed.This study theoretically enriches the "30 year practical exploration and theoretical construction of ’Situation Problem’ teaching in primary and secondary school mathematics",a national level teaching achievement in basic education,and the theoretical research achievements of existing lesson studies;From a practical perspective,it is conducive to the implementation of the "Compulsory Education Mathematics Curriculum Standards(2022 Edition)" and the promotion of the "Three Teachings" and the "Situation Problem" teaching philosophy of mathematics.The research team for this study consists of three eighth grade math teachers(3-6 years of teaching experience)from a public junior high school in GY City,one college teacher(8 years of teaching experience)from the School of Mathematical Sciences of Guizhou Normal University,and the author,a total of five people.The research object is eighth grade students(3 classes,150 people in total)from a public junior high school in GY City.Firstly,using the literature research method,the author combs the development process and achievements of the teaching concept,reveals its connotation,refines its teaching strategies,initially constructs the basic process of lesson study based on the teaching concept,and analyzes the typical teaching designs of the existing Pythagorean theorem;Secondly,using the test method,we understand the difficulties that eighth grade students have in the knowledge of Pythagorean Theorem.Moreover,classroom observation method is used to observe students’ classroom performance and learning status during the teaching process of "Pythagorean Theorem",and collect students’ learning experience as the main basis for after-class reflection and teaching improvement.Finally,the interview method was used to fully communicate with the research team members,and the interview content was recorded with the aid of recording equipment for later improvement of teaching.Through this study,the following conclusions and implications are obtained:(1)Based on theoretical research and practical research,it is concluded that the basic process of lesson study based on the teaching concepts of "Three Teachings" and "Situation Problem" in mathematics consists of six steps: finding and researching problems Learning internalization concept planning teaching design implementation of classroom teaching development of after-class discussions formation of a research report.See Chapter 1 for the link of "discovering research issues",Chapter 2 and Chapter 3 for the link of "learning internalization concept",Chapter 4 for the link of "planning,teaching design",Chapter 5for the link of "implementing classroom teaching" and "conducting after-class discussions",Chapter 6 and Appendix 3 for the link of "forming a research report".The specific flow chart is shown in 3.3 of this study.(2)By using the basic process of course example research based on the teaching concepts of "Three Teachings" and "Situation-Problem" in mathematics,the course "Pythagorean Theorem" was studied,and a teaching design for Pythagorean Theorem was obtained after many modifications.For details,see Appendix 4.(3)Provide feasible strategies and suggestions for front-line mathematics teachers to implement the basic process of lesson study based on the "three teaching" and mathematical "situation problem" teaching concepts.First,it originates from teaching and begins with reflection.Second: Focus on the core and internalization.Third:Cooperative design,multiple analysis.Fourth: Give priority to students,supplemented by teaching.Fifth: Democratic consultation to form recommendations.Sixth: Standardize the format and highlight the key points.