Research On Project Teaching Application Of “Engineering Drawing” In Secondary Vocational Schools From The Perspective Of Two-line Blending

Modern vocational education occupies an important position in the socialist system with Chinese characteristics in the new era,and secondary vocational education is the starting point and foundation of vocational education.Elevator major is a new major set up by secondary vocational schools,whose purpose is to cultivate innovative,composite and application-oriented high-quality technical skills talents needed by the elevator industry.However,the existing teaching methods mainly focus on the teaching of basic knowledge,lack of flexibility,logic and application,which is not conducive to the improvement of students’ understanding of abstract theoretical knowledge,elevator machinery parts and comprehensive ability.As a teaching mode integrating online and offline,twoline mixed teaching has the characteristics of flexibility,while projectbased teaching has strong logic and applicability.It is an important way to improve teaching effect by effectively combining the two and developing flexible and effective teaching design and implementation scheme of Engineering Drawing course.This paper takes “Engineering Drawing” course of elevator major of secondary vocational school as the research object,analyzes the significance of project teaching applied to it from the perspective of twoline mixing,and carries out a quantitative investigation around the teaching status and the problems existing in students’ ability.According to the statistical survey data,there are some problems in teaching,such as single teaching method,lack of practicability of course content,low participation of students,limited teaching resources and incomplete teaching evaluation.Students have low learning initiative and autonomy,finding and solving problems,obtaining and processing information,processing information,solving problems,cooperating and thinking ability.Based on the main problems existing in teaching and students and the support of the theoretical basis,the “3+6” project curriculum blended teaching model is constructed.In the teaching process,it follows three levels of “simple training project,comprehensive training project and complex training project” and six dimensions of “online and offline interaction”,“pre-class and after-class integration”,“student subject and teacher guidance”.The use of diversified teaching evaluation,not only from the online and offline classroom performance dimension and project assessment dimension of the course assessment of students,but also the teaching status and the improvement of students ability comparative evaluation.The "3+6" project curriculum blended teaching mode is used to select a case of "Engineering Drawing" course for teaching design,and the use of Superstar learning information platform and "tractor" project throughout the whole teaching design.Two classes with the same major and grade level are selected to set the experimental class and the control class respectively.The experimental class is carried out the teaching implementation based on the teaching design scheme of the case,and the effect of the implementation is statistically analyzed.The results show that the project-based teaching from the perspective of two-line mixing can effectively improve the existing problems in teaching methods,course content,student learning situation,teaching resources and teaching evaluation when applied to the course Engineering Drawing of elevator major.It can also improve students’ learning initiative and autonomy,as well as their ability to discover problems,learn collaboratively,acquire information,process information,solve problems and think.