A Practical Research On The Use Of CAD Software In High School General Technical Courses To Cultivate Students' Ability To Express Drawings

Under the background of the new curriculum reform and the introduction of new general technology curriculum standards,as one of the five core qualities of the general technical discipline,it is of great significance to cultivate the ability of graphical representation of senior high school students.The teaching environment and means are special because the general technical discipline is in fa or of practice.It is especially necessary to introduce the CAD software manufacturing information and multimedia teaching environment into the classroom.AutoCAD software is a CAD software with a high degree of application in the world.It can be used in 2D drawing,detailed drawing,design document and basic 3D design.The designer does not need to kn ow how to program,and can use it to complete automatic drawing.This study analyzes the theoretical basis of AutoCAD software to improve the ability of high school students to express drawings,and formulates the teaching strategy of applying AutoCAD software to general technology classroom,taking the first grade students in Nanjing X Senior High School as the research object.Through the contrast teaching practice of grouping experiment,the AutoCAD software is applied in the teaching of general technical course graphical representation in the experimental class.By collecting and analyzing the data of the control class and the experimental class,the influence of CAD software on the ability of graphical representation of senior high school students was verified.The purpose of this study is to investigate the improvement of high school students' ability to express patterns in general technology classroom from three aspects:projection,dimension ratio,2D and 3D cognition and mutual conversion.Through the data collection and analysis,it is found that the average correct rate of the experimental class is higher than that of the control class,and the total contrast ratio is higher than that of the control class,but the standard deviation of the experimental class is higher than that of the control class,and the difference of score is obvious.In the two-dimensional and three-dimensional reading and inter conversion part,the overall level of the experimental class is better than that of the control class.The average score of the experimental c1 ass is obviously higher than that of the control class.Research shows CAD software can improve the ability of high school students to express patterns in general technical courses,but there are some differences in different aspects.This study verifies the influence degree of using CAD software to cultivate high school students' graphical representation ability,and provides theoretical basis and practical reference for first-line teachers to use CAD software in teaching on a large scale.