The purpose of this study is to develop an algorithm for solving educational computational and graphic work from a cycle of constructive tasks of engineering and construction design (construction graphics) by computer geometric modeling in the environment of the domestic nanoCAD program. Algorithmization of the solution of the problem was carried out on the example of a training task from the cycle of graphic works in the course "Engineering and computer graphics", which is performed by students in the first semester and is the basis for solving problems of engineering and construction design. It is shown that the use of computer geometric modeling methods by means of modern software products makes it possible to speed up the process of solving a problem, simplify the calculation of the necessary data and visualize the results, which together contribute to an increase in the didactic effect and mastering the learning competencies necessary in future professional activities. Computer geometric modeling contributes to the understanding of the principles of modern information technologies, and also instills the skills to use them to solve more complex educational problems and tasks of future professional activity. Thus, the application of the proposed algorithm of computer geometric modeling in solving educational and applied problems within the framework of the training course "Engineering and Computer Graphics" in the preparation of students of engineering and construction profile, as well as in the performance of research and design activities is appropriate.

Solving Educational and Applied Engineering and Construction Problems by Computer Graphics Methods

The general requirements for geometric and graphic training of students of technical universities are listed. The structure of the innovative methodological system of holding lessons is given. The tasks solved by the components of the system are listed. Each part is considered in detail. The method of holding lessons includes a scalable basic geometric and graphic course, a three-level student training system, an additional super-advanced level for students who study on individual trajectories and take part in olympiad, scientific, practical or competitive activities, electronic resources and multimedia teaching materials that allow to support the educational process for students experiencing difficulties in the usual mode, control measures to ensure the independence of the work of students. The possibility of scaling the basic geometric-graphic course, as well as the level differentiation of practical tasks, are illustrated by examples. The methodology for holding practical lessons includes dividing tasks into subtasks and elementary steps that are available for the vast majority of students to complete. It is noted that this technique is successfully transferred to the remote mode. The professional components of the methodological system are course projects, coursework and elective courses. Examples are given. Two interpretations of the term "practice-oriented learning" are given. It is noted that the proposed methodological system implements practice-oriented learning "in the broadest sense". The information resources that provide informational and methodological support for geometric and graphical preparation are listed. Their brief description is given. A general description of the advanced training program developed at the Department of Engineering Graphics of the RTU MIREA is given, which allows to partially solve the problem of the lack of qualified lecturers of geometric and graphic disciplines in higher education. Conclusions are drawn about the possibilities of the proposed methodological system: it allows to increase students' motivation to study the geometric-graphic course, to organize independent work of students, to provide the required performance indicators. It is also noted that the proposed methodological system allows to save an important pedagogical component - mentoring.

Methodological system for conducting classes at the Department of "Engineering Graphics" RTU MIREA

This article examines the experience of graphic training of students of a transport university in the conditions of distance learning caused by the COVID-19 pandemic by the example of studying the discipline "Descriptive geometry and computer graphics". The use of the BlackBoard electronic educational environment and the teaching and methodological developments of the department staff is shown both as a learning medium for students, including independent work, and as a means of teaching for the teaching staff. Not only the remote format of classes is considered, but also the so-called mixed format, when in-person laboratory or practical classes are held only in small groups, and streaming lectures are conducted with the use of an electronic educational environment. After the end of the pandemic, the mixed format is used in many educational organizations continuously or occasionally due to the withdrawal of a separate group to quarantine. Within the framework of the article, a comparative analysis was carried out, reflecting data on the quality of graphic training among students who studied before, during and after the pandemic, using the example of samples from among the students of the 2019 – 2022 sets. The results of the comparative analysis show that there were no significant fluctuations in one direction or another. This allows us to conclude that the measures taken to organize the educational process in the remote format of classes have helped to preserve the quality of graphic training of students. Recommendations on the organization of graphic training of students are given, which can be used by geometry teachers both in the field of higher education and secondary special education, after returning to the usual conditions of the educational process. 

Graphic Training of Students Using Forms of Distance Learning

This article examines the experience of graphic training of students of a transport university in the conditions of distance learning caused by the COVID-19 pandemic by the example of studying the discipline "Descriptive geometry and computer graphics". The use of the BlackBoard electronic educational environment and the teaching and methodological developments of the department staff is shown both as a learning medium for students, including independent work, and as a means of teaching for the teaching staff. Not only the remote format of classes is considered, but also the so-called mixed format, when in-person laboratory or practical classes are held only in small groups, and streaming lectures are conducted with the use of an electronic educational environment. After the end of the pandemic, the mixed format is used in many educational organizations continuously or occasionally due to the withdrawal of a separate group to quarantine. Within the framework of the article, a comparative analysis was carried out, reflecting data on the quality of graphic training among students who studied before, during and after the pandemic, using the example of samples from among the students of the 2019 – 2022 sets. The results of the comparative analysis show that there were no significant fluctuations in one direction or another. This allows us to conclude that the measures taken to organize the educational process in the remote format of classes have helped to preserve the quality of graphic training of students. Recommendations on the organization of graphic training of students are given, which can be used by geometry teachers both in the field of higher education and secondary special education, after returning to the usual conditions of the educational process.

This article discusses the prospects for applying cause-and-effect analysis - the Ishikawa diagram for visualizing the problems of geometric-graphic training of students of a technical university. The structure of the study using the diagram included the implementation of successive stages. At the first stage, an exhaustive list of problems affecting the level of geometric and graphic training at the university was compiled. At the second stage of the cause-and-effect analysis, problems (factors) were systematized according to semantic sections (logical blocks): employees and the student (person, human factor), material and technical base and educational environment (equipment and other means to ensure the educational process); educational technologies and organization of the educational process, means and technologies for assessing learning outcomes. The next stage included systematization and ranking of problems within logical partitions. This made it possible to identify in a simple and accessible form the most significant factors in the emergence of the problem under study at three levels. The implementation of the last three stages made it possible to complete the study with obtaining the final structure of the factors of the problem of a low level of geometric and graphic training of students. The result of the study was a graphical interpretation of the results of the cause-and-effect analysis. Thus, the possibility of using the diagram to identify the most significant cause-factors that affect the level of mastering the disciplines of the graphic cycle by students, as well as a means of visualizing the cause-and-effect analysis, is shown.

Cause and Effect Diagram of the Problems of Geometric and Graphic Training of Students at a Technical University

This study proposes the introduction of reverse engineering technology into a graphic workshop in the discipline «Engineering Graphics». The purpose of this study was the scientific and methodological substantiation of the need to use reverse engineering in the methodology of teaching engineering graphics. The article considers the concept of «reverse engineering», its application for solving engineering problems and in the educational process. It is shown that reverse engineering of a part and a sketch of a part are used in solving issues of production organization, in pilot production, repair and other cases, to solve similar and sometimes identical engineering problems. It has been suggested that the technology of reverse engineering in production conditions can replace the function of sketching a part. In the educational process for some areas of training, it is proposed to consider reverse engineering of the part in addition to the topic “part sketch”. A comparison is made of the use of reverse engineering technology and part sketching to solve the engineering problem of obtaining a three-dimensional digital model of a part. As part of the educational process, it is proposed to consider it as a situational or complex task. The scientific and methodological substantiation of the need to use reverse engineering in the methodology of teaching engineering graphics is based on the results of the experiment, which included parallel operations of reverse engineering and part sketching.

E. Verhoturova

Papers

Cause and Effect Diagram of the Problems of Geometric and Graphic Training of Students at a Technical University

Solving Educational and Applied Engineering and Construction Problems by Computer Graphics Methods

Reverse engineering is an effective tool for teaching engineering graphics