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Career & Technical Education Sketching 2.00 Explain and demonstrate basic sketching skills and techniques.
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Career & Technical Education Sketching Concepts 2.01 Explain the concepts related to sketching.
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Purpose of a Sketch Quickly & easily get an idea on paper Design sketches Freehand technical sketches Technical illustrations
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Freehand Technical Sketch
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Design Sketch
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Technical Illustration
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Sketching Materials Paper Pencil Soft lead Optional Eraser Grid Paper
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Sketching Technique Proportion Clarity Sketching Aids
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Sketching Lines Vertical lines Top to bottom Long straight lines Series of short straight lines
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Sketching Circles & Arcs Begin by lightly constructing a square
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Sketching Angles Begin with 90 ° angle 60 ° 30 ° 45 ° Subdivide onceSubdivide twice
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Sketching Assignment Complete Chapter 3 Exercise Page 51 Sketch 1-5 (10 times each) Complete Chapter 3 Exercise Page 52-56 Sketch each step of the circle, arc, ellipse, hexagon, and octagon once. Then use the technique to sketch 10 examples of each shape. Read Chapter 3 and write the answer to Test Your Knowledge ?s p. 59
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Career & Technical Education Sketching 2.02 Explain the concepts and principles underlying isometric, oblique and multiview sketching.
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Sketching Types of Sketches Single-view Multi-view Pictorials
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Single-view Sketching Technical purposes Front view Most descriptive features
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Steps for Single-view Sketching Object Step 2 Step 1 Step 3Step 4
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Multi-view Sketching Technical sketch Front view Top view Side view
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Multi-view Sketch TOP VIEW R. SIDE VIEW FRONT VIEW
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Single-view/Multiview Sketch Assignment Page 212-214 Sketch Front, Top, Right of each problem 1-18. Sketch all sides of a ball with a smilely face Sketch all sides of a child’s play block
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Pictorial Sketches Quickly communicate an idea Three dimensions in one view Width Height Depth
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Pictorial Sketches Three (3) types Isometric Oblique Perspective
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Isometric Sketch WIDTH DEPTH HEIGHT
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Isometric Sketching Three equally spaced axes of 120 °
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Isometric Sketching Receding lines Typically 30° off horizontal
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Isometric Sketching Circular shapes appear as ellipses
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Isometric Ellipses Correct ellipse orientation
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Isometric Sketching Non-Isometric lines Locate endpoints and connect
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Isometric Sketching Assignment
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Oblique Sketch WIDTH DEPTH HEIGHT
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Oblique Sketching Front view is drawn true shape and size
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Oblique Sketching Receding edges are usually drawn at an angle of 30°, 45°, or 60°
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Oblique Sketching Circles and curves drawn on frontal plane will appear true shape and size
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Oblique Sketching Assignment Read p.190-191 Exploring Drafting Oblique Drawings Sketch Problem 12.1-10,13,14,15,16 For each sketch cavalier, cabinet, and general oblique If time allows challenge yourself by completing 12-18
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Perspective Sketches 2-Point Perspective1-Point Perspective
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Perspective Sketches Objects appear as the eye would see them Most realistic type of pictorial sketch Most difficult pictorial sketch to draw
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Perspective Sketching Assignment Read Perspective Drawings p.191-194 Sketch Figure 12-15,12-17,12-18 Sketch p.201 Problem 12-13 Reproduce Figure 12-16 using your own plane or car design Extra Credit Create a perspective sketch of your initials
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