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Preparation of teaching aids and learning aids.
Teaching aids:1Several sketches of line modeling. 2.one cube and cylindrical frame model;
Learning aids: soft-core pencils, erasers, textbooks, workbooks.
1. Organize teaching and inspect the preparation of students' classroom routines and learning tools.
2) Introduce several modeling sketches and chiaroscuro sketches into the new course, and (3) give students appreciation, identification, and then explanation.
Question: There are similarities and differences between a line sketch and a chiaroscuro sketch.
4) Teach a new lesson.
Second, the characteristics of the line modeling sketch and the modeling function of the line.
Through the use of line structure, the sketch of line modeling directly reflects and hints at the volume, distance, orientation and contrast of the object, and shows the combination of the interior and exterior of the object and the spatial state of the front and back, left and right.
The line modeling sketch removes or weakens the light and dark tones, and emphasizes the real body structure of the essence of the object, so that the effect of expressing the object is clear, affirmative, clear and powerful.
The line sentence sketch is to study the creation of nature and the structure of objects in the way of line sentence, and the modeling function of the line can be summarized as follows:
1) Represent the outline of the object, (2) Outline the boundary of the form.
3) Representation of the internal and external structure, spatial position, perspective changes and the combination relationship between objects.
4) Expressing the relationship between virtual and real, light and shade and the sense of volume.
5) Expressing the potential, force, rhythm and rhythm of objects, (6) Expressing people's taste, (7) Temperament.
Line modeling sketch can not only be a form of artistic expression in the art profession, but also in the form of science and engineering, as a kind of prison skills of engineering and technical personnel to serve the design, in architecture, garden, industrial design and other drawings, the sentence of structural line has become a design means for engineering and technical personnel, widely used in various fields of modern construction.
3. Cubes and cylinders.
1) Cube (analysis against the cube frame model).
The cube is the basis of all shapes, and its structure is composed of six square planes of the same size, according to the vertical relationship.
The cylinder is rotated 360 times on the long side of the rectangle as the axis. and composition. It can also be said to be made up of an infinite number of identical circles stacked on top of each other (like a hard coin stacked into a cylinder).
2) Cylinder. The combination of the cube and the cylinder shows that a cylinder can be produced in the cube, and the composition of the cylinder in the cube is made by taking the half side of a cube as the axis, and the center point of a face of the cube as the center of the circle, and rotating 306. The three-dimensional effect of the cylinder can be expressed through the perspective circle of the top and bottom surfaces.
Fourth, the operation requirements.
1. Copy textbook cube and cylinder model paintings.
2. Draw with 2b and 5b pencils, 3. Require accurate perspective of the representation of objects, 4. Clear structure.
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