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Xu Wanxiu, female, member of the Communist Party of China. In 2018, he received his doctorate from Jiangnan University. From 2015 to 2016, he was jointly trained by Dr. McGill University of Canada. The research direction is intelligent manufacturing, food processing and detection, etc. He has published 23 academic papers, including 11 SCI journals. He participated in one National Natural Science Foundation Project and presided over two projects of Ministry of education. Instructing students to participate in the Internet plus 1 Zhejiang bronze awards, and instructing students to participate in 1 National Science and technology projects. At present, he is the head teacher of class 191 in the international class of the Department of machinery and undertakes the teaching work of engineering drawing, parts mapping and food machinery and equipment. Since the beginning of his career, he has actively participated in teaching training and teaching workshops, and won the outstanding students of 2019 dynamic classroom teaching workshops. Presided over or participated in two school level teaching reform topics, paid attention to the exploration of teaching theory, combined with Superstar platform and classroom school to carry out online and offline hybrid teaching.
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Engineering drawing (2) is a compulsory basic engineering course for students majoring in mechanical design, manufacturing, automation and English. This course is a combination of theory and practice, usually in the second semester. This course includes three parts: descriptive geometry, engineering drawing and computer drawing. It mainly describes the theory, method and technical specification of drawing and reading mechanical drawings, which is a basic skill that engineering and technical personnel must master. It expresses the design intention through drawings, guides production and carries out technical exchange according to drawings, which has the bridge function of connecting the preceding and the following, and lays the foundation for the follow-up professional course study, the completion of course design, the graduation design and the engineering and technical work. Through learning, students are trained to draw and read engineering drawings and their basic skills of computer drawing, with the ability of space thinking, innovative configuration design and hands-on ability. Make students develop engineering consciousness, standardization consciousness, conscientious and responsible work attitude and rigorous and meticulous work style. At the same time, it pays attention to the cultivation of students' comprehensive quality, such as teamwork, communication, expression and innovation ability. The goal of this course is to train students to be designers with engineering consciousness in design, and to stimulate students' professional feelings, professionalism and patriotic enthusiasm.
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Appreciation
In this case, in the case of epidemic situation, the teachers and nurses who went to the front line to guard our country's sense of mission and take the spiritual values of craftsmen as the goal, theoretically analyze and improve personal values. The prominent features of Ideological and political education in this course are as follows:
First, the spirit of craftsman should be integrated into the process of education and teaching, so that students can understand the importance of craftsman spirit in engineering drawing and have higher requirements for their ability and quality. In this course, the spirit of craftsman values and engineering drawing in the profile of the standard combined with the students to learn knowledge and personal value orientation.
Second, combine classroom teaching, critical thinking and social services. In this class design, there will be a design for finding mistakes, including drawing time leakage lines in sectional view, so that students can think about how to learn craftsmanship spirit as a contemporary college student. Finally, students should be trained to be dedicated, lean, focused, innovative and have such career value orientation and behavior performance after employment.
"Section view" is the teaching content in the engineering drawing textbook. For the content learned before, the internal structure of the parts is represented by dotted lines in the drawing. For the complex structure, there are many dotted lines in the drawing; while the section view is based on the view, which cuts the objects, mainly to express the internal shape of the parts, which is also the basis of learning the part drawing and assembly drawing later. Craftsman spirit - craftsmen like to constantly carve their own products, constantly improve their own technology, and enjoy the process of product sublimation in their hands. Craftsman spirit is an important measure of social civilization and progress, the spiritual source of making in China, the brand capital of enterprise competition and development, and the moral guidance of employees' personal growth. Professional dedication requires students to be conscientious and conscientious based on their awe and love for engineering drawing. Concentration requires students to be able to be patient, persistent and persistent in their mind and focus on the details of engineering drawing, which is the spiritual characteristic of all "craftsmen in big countries". The drawing of sectional view needs the spirit of "craftsman" in every internal structure, such as careful and dedicated sectional line, as well as the working attitude of conscientious, responsible, practical and dedicated, and the rigorous, realistic and meticulous working style. At the same time, aiming at the combination of practice, the spirit of "craftsman" is cultivated in the practice of drawing.
Teaching objectives
1. Understand the cause of section view?
2. Understand the principle and forming process of section view
3. Understand the presentation of section views.
Key and difficult points in Teaching
1. Understand and master the formation process of section view through 3D simulation video.
2. In section drawing, the specific location of solid part and solid part.
3. Drawing of section view.
Teaching program design
Classroom teaching should be centered on mastering knowledge, with the goal of cultivating students' ability and learning craftsman spirit, with the form of project-based teaching method, focusing on key points and breaking through difficulties. In this class, I mainly use the way of online live broadcast to carry out my teaching activities in the following aspects.
teaching process
Teacher activities
Student
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Design
intention
Course introduction
Play the video of craftsman spirit to let students understand the craftsman spirit and our sense of mission of making in China at this stage.
At the same time, the students are asked questions. The spirit of craftsmanship requires us to make the initial design work -- the requirements of engineering drawing. Show a group of views of the water cup, let the students imagine the shape, then ask the students "what are the disadvantages of too many dashed lines in the main view" (item 1), so as to introduce the new lesson section view.
Students listen carefully and answer the spirit of craftsman with the video they watch. At the same time, feel the view to express the structure of the object, fully feel the lack of view ability, and complete project 1.
Compared with the typical introduction of "recall old knowledge - acquire new knowledge", the introduction of this question method is more in line with students' thinking mode. At the same time, achieve the breakthrough of knowledge goal one.
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1、 Concept of section view:
If a part is cut by a cutting plane, the part between the observer and the cutting plane is removed, and the rest part is projected to the projection plane, which is called a section view.
Through multimedia demonstration, the formation and concept of anatomic view are discussed. Question: what are the three main steps in the formation of sectional view? (item 2)
Students listen carefully and take notes. Observe the process carefully
Answer: three steps of sectioning, removing and viewing, complete project 2.
From perceptual knowledge to rational knowledge on the level of knowledge system, it conforms to the cognitive law of students. Through the recorded video and the visual teaching of the model, the students can form an intuitive feeling of the concept of section view and strengthen their memory. At the same time, achieve the breakthrough of knowledge goal two.
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2、 Classification of section views:
According to different situations, the application conditions of three kinds of section views are used: full section, half section and partial section.
Students listen carefully and take notes. Carefully observe the methods used and the applicable conditions.
Further deepen the understanding of the concept of section view, and use different methods for different situations of section view.
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3、 Section drawing example:
Combined with multimedia to explain, let students understand the drawing steps of section view.
Title: change object view to sectional view.
Observe the teacher's demonstration carefully and be familiar with the steps of drawing section view.
Stimulate students' learning motivation, help students to construct knowledge actively, and learn to learn in learning. Achieve the breakthrough of knowledge goal three.
New acquaintance
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Specific drawing steps:
1. Hypothetical cutting machine
2. Remove some parts:
3. Identify the entity position and draw the section line.
Students listen carefully and take notes.
Through the video demonstration, students can realize the formation and drawing method of the section view intuitively.
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4、 The drawing of section view leads to the drawing method of section line stipulated by the national standard from the above questions. Everyone is required to have craftsmanship spirit, and the details must have strict and complex national regulations:
Draw a section line at the solid position through which the section plane passes. Specific drawing steps:
The students carefully observe the teachers' correct drawing method and ask for the standardization of their own drawing.
The method of drawing section line is demonstrated by multimedia courseware, so that students can master the drawing of section line.
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Practice
To cultivate your craftsman spirit, we need to be meticulous about the details, find out the mistakes in the exercise chart and explain the correction methods. And complete the exercise of changing the main view to the full section view.
Students discuss drawing by themselves. Grade the drawing situation and invite students to share the computer drawing interface to complete project 4
The core of teaching cases is to choose typical examples, practice in class, complete alone, share computer drawing assignments on screen, and enhance students' participation in teaching.
Practice
summary
Summary of consolidation exercise: summary of induction and precautions for drawing sectional view
Summarize the key points of knowledge and help students to organize their knowledge.
Classroom
Summary
Invite students to summarize the steps
Take the initiative to summarize the steps and make notes.
Through students' own summary, strengthen students' memory.
Evaluation of teaching effect
In the practice of teaching section view, especially pointing out the missing lines, the students have a better understanding of the craftsman spirit and the rigorous and meticulous requirements in the process of engineering drawing. In the course of teaching, we should not only pay attention to the popularization of students' knowledge, but also pay attention to the cultivation of students' patriotism. The classroom interaction is efficient and the teaching effect is obvious.
Case reflection
1. Teaching content: the teaching goal of this lesson is to let students know and use the drawing method of section view through the project method; to use the method of combination of teaching and practice, to let students use the drawing method they have learned to convert the three views to the section view; to use the simulation method, to let students understand the specific section view principle and the method types of section view. On the whole, the content is set up step by step to achieve a complete design process, but it involves more knowledge points and is more difficult.
2. In terms of teaching process: This course adopts the process of "introducing the current situation, raising problems, analyzing and exploring, solving problems and summarizing". In the teaching process, examples are introduced for explanation and simulation demonstration, but it also causes problems that knowledge points are not easy to be connected in series; in the practice phase, students are missing knowledge points, so we will lead students to sort out knowledge points in time, strengthen the memory curve, and ensure that Students must keep up with the pace of the class.
3. In terms of teaching strategy: through the spirit of craftsman, we are required to have a rigorous attitude towards our engineering drawing. In addition, according to the complicated internal structure, it is not easy to mark and read the drawing, this section leads to the content of the lesson, raises questions and analyzes the problems. However, individual students are not highly interactive and can not keep up with the old teacher's ideas. Before class, we should choose the cases that students are interested in to enhance their enthusiasm.
Through the teaching of this lesson, we have basically realized the predetermined teaching plan, and students have also learned the whole process of sectional view. But the teaching process