Wallingford Public Schools - HIGH SCHOOL COURSE OUTLINE

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1 Wallingford Public Schools - HIGH SCHOOL COURSE OUTLINE Course Title: Computer Aided Drafting & Design Course Number: 7163 Department: Career and Technical Education Grade(s): 9-12 Level(s): Academic Credit: 1 Course Description During the first half of the year students will explore traditional drafting techniques such as how to sketch and draw different objects/products accurately. The second half of the year focuses on computer aided drafting and the reinforcement of traditional drafting skills using the computer. Students interested in drafting, computer aided drafting, design, construction, manufacturing and engineering are encouraged to take this course. Through individual or group problem solving activities, students will learn to read, interpret and draw technical plans that fit a variety of applications. Required Instructional Materials CAD Key version 21 Cookbook, Tech Ed Concepts, Dr. Walt s CADKEY 21.5 Fundamentals, Conceptual Product Development Inc., CAD Key software (vs 20 or 21.5), Kubotek. Sufficient hardware and printers Completion/Revision Date Approved by Board of Education on October 16, 2006 Mission Statement of the Curriculum Management Team The mission of the Career and Technical Education Curriculum Management Team is to ensure that students, as a result of their experiences in K-12, will demonstrate transferable skills, knowledge, and attributes for successful life management, employment, career development, post-secondary educational opportunities, and life long learning. Enduring Understandings for the Course Fabricating an object requires many steps including planning, drawing and revisions before the object can be manufactured. Sketches and drawings are created from different views in order to create manufacturing plans of a three dimensional object. Standardized procedures for drawings are essential to communicate with various tradesmen in a common language. Technical drawings are among one of the first steps of a multi-step process that results in fabrication. Technical drawings are essential for all product designs (such as computer, auto parts, etc.), home designs (stair treads, deck construction, etc.) and anything that is manufactured. Technology (such as CADD) allows society to complete technical drawings more Computer Aided Drafting & Design Page 1 of 7

2 efficiently and accurately. Multi view drawings communicate ideas from the draftsman to the fabricator because they outline the dimensions, materials, etc. required for fabrication. Pictorial drawings are 3-D representations of an object and do not contain accurate angles. Pictorial drawings represent an object in a three dimensional perspective that allows the viewer to visualize the object. Computer Aided Drafting & Design Page 2 of 7

3 1.0 Traditional Sketching and Drawing by Hand In order to fabricate an object it requires many steps including planning, drawing and revisions before the object can be manufactured. Sketches and drawings are created from different views in order to create manufacturing plans of a three dimensional object. Standardized procedures for drawings are essential to communicate with various tradesmen in a common language. LEARNING OBJECTIVES The student will: 1.1 Describe the importance of proper lettering. 1.2 Demonstrate single stroke lettering. 1.3 Demonstrate the use of drafting tools (tsquare, triangle, scale, straight edge, etc.) for proper line spacing. 1.4 Utilize proper terminology pertaining to lettering. 1.5 Demonstrate various styles of lettering. 1.6 State the importance of sketching. 1.7 Differentiate between refined and unrefined sketches. What are the benefits of proper view placement? How does sketching aid in the drawing process? Why are standardized procedures important in lettering? T-square Triangle Scale Straight edge Models of basic geometric shapes LCD projector to display models Project model of a geometric object on the screen and have students apply basic sketching skills Board demonstrations of proper techniques Using a variety of shapes have students create multi-view sketches - top, front and right side Use a clear Plexiglas box to help students create sketches from different views Sketches and drawings (neatness, accuracy, measurement, etc.) Teacher observations of student work and application of skills Tests and quizzes Participation Self-evaluations Peer critiques Computer Aided Drafting & Design Page 3 of 7

4 2.0 Use and Care of Traditional Drafting Equipment In order to fabricate an object it requires many steps including planning, drawing and revisions before the object can be manufactured. Sketches and drawings are created from different views in order to create manufacturing plans of a three dimensional object. Standardized procedures for drawings are essential to communicate with various tradesmen in a common language. LEARNING OBJECTIVES The student will: 2.1 Identify the correct name of basic drafting equipment (templates, t-square, triangles, different measuring scales, compass, erasing shield, dividers, etc.). 2.2 Describe the correct use and proper situation when a tool would be used. 2.3 Demonstrate proper use and maintenance of drafting equipment. 2.4 Demonstrate the procedure for orientating a drawing, utilizing proper drafting techniques. 2.5 Select the correct drafting equipment to complete a drawing. 2.6 Accurately measure, utilizing architectural, mechanical engineering, and civil engineering scales. 2.7 Demonstrate accurate use of a divider and compass to measure and draw circles and arcs. 2.8 Apply the correct template to complete an assignment. What are the benefits of proper view placement? How would carelessness affect the accuracy of drafting equipment? What is accurate enough? What makes assembly drawings useful or effective? When would someone use a template in manufacturing, assembly, construction and/or home use? Who would use a template in manufacturing, assembly, construction and/or home use? T-square, triangle, scale, straight edge, etc. Models of basic geometric shapes Demonstrations of drawing techniques Hands-on activities Measuring and scale activities Drawing and measuring circles and arcs of particular dimensions and utilize dividers Identify situations where templates are required Explain the standardized criteria for setting up a correct drawing and the correct presentation Problem-based instruction Quizzes and tests Participation Self-evaluation Teacher observations of student work and application of skills Measurement quiz Computer Aided Drafting & Design Page 4 of 7

5 3.0 Multi View Drawing / Working Drawing Note: Many of these objectives are addressed in the first half of the course during traditional drafting and then revisited during computer aided drafting (CAD). Technical drawings are one of the first steps in a multi-step process that results in fabrication. Technical drawings are essential for all product designs (such as computer, auto parts, etc.), home designs (stair treads, deck construction, etc.) and anything that is manufactured. Technology (such as CADD) allows society to complete technical drawings more efficiently and accurately. Multi view drawings communicate ideas from the draftsman to the fabricator because they outline the dimensions, materials, etc. required for fabrication. LEARNING OBJECTIVES The student will: 3.1 Explain the importance of transferring a 3- dimensional object into a 2-dimensional drawing using multi-views (6). 3.2 Utilize geometric shapes and formulas to create technical drawings using different drafting tools. (by hand and computer) 3.3 Accurately plot a top, front and right side view of an object. (by hand and computer) 3.4 Select the appropriate views from a drawing or an object to construct a multi view drawing. 3.5 Utilize orthographic projection to create multi-view drawings. (by hand and computer) 3.6 Explain the representation of line types: solid/object, center, hidden, etc. 3.7 Demonstrate proper dimensioning on multi-view drawings. (by hand and computer) 3.8 Demonstrate proper dimensioning techniques: lines and symbols, extension lines, numerals and notes, scale, vertical, horizontal, radial, angular, parallel, diametric, details, limits, etc. (by hand and computer) How do multi view drawings convey ideas more efficiently than a single view drawing? How do you decide what views to select for a multi-view drawing? How can you represent a 3-D object in a 2- D drawing? How do geometric principles aid in technical drawings? Why is it necessary to use proper dimensioning, line types and layout in drawings? How do dimensions help you interpret a drawing? What problems would arise from inaccurate or a lack of dimensions? LCD projector Plexiglas box used for viewing objects from multi-views Models of numerous objects Assorted pictorial drawings Utilize proper terminology pertaining to multiview drawings: visualization, implementation, orthographic projection, quadrant, vertical plane, horizontal plane, spherical, top view, front view, right side view (third-angle projection) Explain why you might chose a view other than top, front and right side Draw a 2-D drawing that represents a 3-D curved surface. Identify the meaning and importance of geometric terminology, such as: hypotenuse, adjacent, parallel, perpendicular, right angle, acute angle, obtuse angle, complementary angle, supplementary angle, equilateral triangle, right triangle, radius, diameter, quadrant, bisect, intersect, tangent, ellipse, drawing grid. Computer Aided Drafting & Design Page 5 of 7

6 Demonstration of skills such as line types, dimensioning, centering, etc. Utilize terminology pertaining to dimensioning: dimension, working drawing, extension line, dimension line, leader, finish mark, dual dimensioning, size dimension, reference dimension, chamfer, detail drawing, assembly drawing, etc. Peer assistance Quizzes and tests Drawings and/or products created Writing assignment to answer essential questions Participation Self and peer evaluation Computer Aided Drafting & Design Page 6 of 7

7 4.0 Pictorial Drawings Note: Many of these objectives are addressed in the first half of the course during traditional drafting and then revisited during computer aided drafting (CAD). Pictorial drawings represent an object in a three dimensional perspective that allow the viewer to visualize the object. Pictorial drawings are 3-D representations of an object and do not contain accurate angles. LEARNING OBJECTIVES The student will: 4.1 State the importance of pictorial drawings. 4.2 Differentiate between the various types of pictorial drawings: isometric, axonometric, oblique, exploded, and assembly. (by hand and computer) 4.3 Utilize proper techniques for creating pictorial drawings: starting a 30 degree angles (isometric), beginning with a front view (oblique), and eliminating hidden lines. (by hand and computer) How do pictorial drawings contribute to the understanding of an object? Why are pictorial drawings important in today s workplace? Home? Industry? How can one take a 2-D drawing and create a 3-D object? Why do technical drawings use pictorial drawings? LCD projector Assorted pictorial drawings Plexiglas box used for viewing objects from multi-views Assorted templates Utilize proper terminology pertaining to pictorial drawings: axonometric, isometric, perspective, oblique, isometric line, non isometric line, ellipse, revolution, picture plane, projector, horizon line, vanishing point, construction plane, display view, line/pos, x, y and z axis, transform delta. Demonstrations or modeling such as: o Formula to center drawings o Triangle importance when creating drawings o Creating ellipses o Identify that isometric drawings are equally distorted Problem based instruction Peer assistance Quizzes and tests Projects such as design and create their own drafting table or another object Writing assignments Self and peer assessments Drawings Computer Aided Drafting & Design Page 7 of 7

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