Practice Research On Mathematical Solid Geometry Teaching Assisted By DGS In Senior High School

Cabri-3D is a kind of teaching software which can effectively assist the teaching of high school mathematics solid geometry.Its historical development process started from the popularity of CAI(Computer Assisted Instruction).Since the 1980 s,primary and secondary schools all over the world have opened special information technology courses in order to improve the information literacy of students.Based on this understanding,information technology also began to be used as a tool and means to assist teaching content teaching to serve the teaching of subject courses.As for the teaching of mathematics subject,DGS(dynamic geometry software)is very suitable for assisting the teaching of mathematics subject among all kinds of CAI software.In terms of the course content of mathematics,Cabri-3D in DGS is very suitable for assisting the teaching of mathematical solid geometry knowledge.The main content of the paper consists of five parts:The first part is the content of Chapter 1.This paper mainly describes the historical development process of Cabri-3D and introduces the research background,research objects,research problems,research significance and research methods of Cabri-3D assisted solid geometry teaching practice.The second part is the content of Chapter 2.Understand the research achievements and development status of this field,and determine the research direction of the paper on this basis.Combined with the new situation of curriculum teaching under the current social situation(epidemic situation and national Primary and secondary school Teachers’ Information Technology Application Ability Improvement Project 2.0),the specific research content of the paper is determined.The content of Chapter 3 and Chapter 4 of Part 3.This paper introduces Cabri-3D in detail and compares it with other common DGS software in operation and effect presentation.Finally,it expounds the theoretical basis of using Cabri-3D software to assist high school solid geometry teaching.The fourth part is the content of Chapter 5 and chapter 6.Firstly,through the analysis of high school solid geometry content teaching courseware examples,and summarized into a digital resource database.According to the current situation of mathematics classroom teaching,three practical experiments were carried out to test the effectiveness of Cabri-3D assisted high school solid geometry teaching.The fifth part is the content of Chapter 7.Expound the conclusion of the research,summarize the shortcomings of the research,and determine the direction of further research.Cabri-3D assisted solid geometry teaching to adapt to the current new situation of the new requirements for teaching,meet the application conditions in the network micro-class teaching,online teaching,and teachers online recruitment assessment of these three teaching methods,can effectively improve the teaching effect of solid geometry in the new three situations.