CAD
CAD Corrections
Architectural Design
Lesson Plan
Performance Objective
Students will learn how to correct simple issues within a CAD environment.
Specific Objective
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Demonstrate the use of commands within a CAD environment
Demonstrate the terms of CAD
Demonstrate CAD file organization
Identify the need of CAD within a real world situation
Describe the process of manipulating drawing elements within a CAD environment
Terms
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CAD – computer aided design; using the computer software to compose drawings
Move – the ability to alter the location of a drawing element
Erase/Delete – the ability to remove the drawing element
Cut/Trim – the ability to reduce the size of an object at a predetermined dimension
Copy – the ability to replicate a drawing element
Rotate/Turn – the ability to alter the angle of a drawing element
Scale – the ability to alter the overall dimension of a drawing element
Hatch/Pattern the command used to add a pattern to objects
Time
The lesson will take 35-45 minutes to complete. The independent practice can take anywhere from 25 minutes
to a few days, depending on instructor resources, needs, and time frame. Please refer to the
Extension/Enrichment section for explanation.
Copyright © Texas Education Agency, 2012. All rights reserved.
1
Preparation
TEKS Correlations:
This lesson, as published, correlates to the following TEKS. Any changes/alterations to the activities may result
in the elimination of any or all of the TEKS listed.
Architectural Design
130.46.(c) Knowledge and skills
(6) The student applies the concepts and skills of the profession to simulated or actual work situations:
(B) construct points, lines, and other geometric forms using accepted computer-aided design
methods;
(E) use a computer system to create and modify architectural drawings;
(F) plot architectural drawings for presentation.
Interdisciplinary Correlations:
Environmental Systems
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112.37(c)(2)(H) … use a wide variety of additional course apparatuses, equipment, techniques,
materials, and procedures as appropriate such as air quality testing devices, cameras, flow meters,
Global Positioning System (GPS) units, Geographic Information System (GIS) software, computer
models, densitometers, clinometers, and field journals;
Advanced Quantitative Reasoning
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111.37(c)(12)(A)…create and use two- and three-dimensional representations of authentic situations
using paper techniques or dynamic geometric environments for computer-aided design and other
applications;
Occupational Correlation (O*Net – www.onetonline.org):
Job Title: Architectural Drafters
O*Net Number: 17-3011.01
Reported Job Titles: Drafter, Architect, Draftsman, Architectural Designer
Tasks:
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Operate computer-aided drafting (CAD) equipment or conventional drafting station to produce
designs, working drawings, charts, forms and records.
Lay out and plan interior room arrangements for commercial buildings using computer-assisted
drafting (CAD) equipment and software.
Check dimensions of materials to be used and assign numbers to lists of materials.
Copyright © Texas Education Agency, 2012. All rights reserved.
2
Soft Skills: Active Listening, Mathematics, Critical Thinking
Accommodations for Learning Differences
It is important that lessons accommodate the needs of every learner. These lessons may be modified to
accommodate students with learning differences by referring to the files found on the Special Populations
page of this website (cte.unt.edu).
Preparation
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Important – This lesson assumes you have access to a functioning computer lab with CAD software and
the ability to print CAD files.
Important – This lesson assumes that students have a basic introduction to CAD.
Important – You may have to manipulate the given CAD file to fit your standards for class.
Review and familiarize yourself with the terminology, materials, and CAD.
Have computer lab ready for student use.
Test and prepare CAD software.
Have materials and documents ready for distribution prior to the start of the lesson.
This lesson will take 35-45 minutes to complete. The Extension/Enrichment section of this lesson
contains some ideas that can extend the lesson. The extent of the time frame given to this lesson can
vary depending on your resources and needs.
References
Shumaker, T. M., Madsen, D. A., & Madsen, D. P. (2012). AutoCAD and its applications basics 2013.
Hoboken, NJ: Goodheart-Willcox.
Instructional Aids
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Reference Book
Sample CAD drawings and images
Lesson Software Presentation
Projection/Control software for computer lab
Instructor Computer/Projection Unit
Materials Needed
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Presentation boards (if needed)
Equipment Needed
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Computer lab with CAD software
Surface to hang presentations (if needed)
Learner Preparation
Discuss rules and guidelines for use of computers.
Copyright © Texas Education Agency, 2012. All rights reserved.
3
Introduction
The main purposes of this lesson are to help students:
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Understand CAD as a method for creating and manipulating architectural drawings (past)
Understand and use CAD as a communication tool (present)
Use CAD for architectural projects (future)
Show examples of architectural CAD drawings. Allow students to ask questions and discuss pictures if students
are unclear or curious.
Ask students if they have ever heard of CAD. What does it stand for?
Tell students that CAD stands for computer aided design. You use computer software to create architectural
drawings. This has become the most popular method around the world for creating architectural blueprints in
architecture as well as in many other industries.
Ask students if they have ever heard of any CAD software.
Tell students that there are many types of CAD software used throughout the world. CAD as a method has
been around for many years and has become very advanced over the years. There are many different CAD
programs and some have specific uses for specific industries.
Ask students if they have ever used a CAD program.
Tell students that the class is going to investigate how to use a CAD program to manipulate a drawing file and
print the results.
Copyright © Texas Education Agency, 2012. All rights reserved.
4
Outline
Outline (LSI Quadrant II):
Instructors can use the software presentation and slides in conjunction with the following outline.
MI
OUTLINE
I.
NOTES TO INSTRUCTOR
Prior knowledge of the concept of CAD
II.
III.
Use software presentation
slides 3-5 to introduce CAD
concepts.
Introduction of CAD
Vocabulary and terms for CAD
IV.
Demonstrate how to properly edit CAD
drawings
V.
Show how to use the computer lab and
access the CAD software
VI.
Begin discussion over CAD
and discover students’
prior knowledge. Use
images from web sites,
magazines, etc.
Independent Practice
Use software presentation
slides 6-10 to introduce
CAD concepts.
Demonstrate CAD editing
software, or available
means.
Show the CAD software to
students for editing CAD
files
Students will correctly edit
the CAD file
Multiple Intelligences Guide
Existentialist
Interpersonal
Intrapersonal
Kinesthetic/
Bodily
Logical/
Mathematical
Musical/Rhythmic
Naturalist
Verbal/Linguistic
Visual/Spatial
Application
Guided Practice (LSI Quadrant III):
Demonstrate to the students how to open CAD drawings, access files, and manipulate the drawing elements within
them.
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Model the proper techniques, safety, guidelines, and rules for using the computer lab.
Independent Practice (LSI Quadrant III):
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Have students manipulate the CAD file into a correct format.
Summary
Review (LSI Quadrants I and IV):
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Have students present their corrected printed CAD file.
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Ask students to reflect on their knowledge and recall where else they can use CAD in their lives and at school.
Evaluation
Informal Assessment (LSI Quadrant III):
Any of the following can be used as informal assessments :
• Spot check for vocabulary terms
• Check progress on CAD project
• Participate actively in computer lab
• Present CAD project
Formal Assessment (LSI Quadrant III, IV):
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CAD project file using grading rubric
Enrichment
Extension/Enrichment (LSI Quadrant IV):
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Have students develop designated additional drawing elements.
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Have students create and develop their own additional drawing elements.
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Have students significantly manipulate the drawing file.
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Have students re-create the drawing without the initial CAD file.
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6
Architectural Design
CAD Correction
Handout
Concepts:
CAD:
computer aided design; the process of using computer software to draft and/or
design architectural projects
CAD Commands:
the various program commands that allow the user to operate within the
CAD environment
Selection:
Modification:
the process of choosing objects for modification
the process of altering existing objects
Dimensioning: the process of adding dimensions indicating sizes on objects
CAD Vocabulary:
Crosshairs:
the cursor used for selection
Line:
the command used to create a line
Cut/Trim:
the command used to “delete” a portion of a line
Erase/Delete:
the command used to remove an object or objects from a drawing
Rotate/Turn:
the command used to alter the angle of an object’s position in the plane
Copy:
the ability to replicate a drawing element
Scale:
the command used to proportionately resize an object
Hatch/Pattern: the command used to add a pattern to objects
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7
Architectural Design
CAD Corrections
Test/Project
Project:
Students will use the given CAD file and correct the indicated errors on the drawing.
Students will then print and present their adjusted CAD drawing.
Test:
Student files will be graded using the rubric.
Extension:
Students can add given elements to the layout.
Students can develop their own elements to add to the layout.
Copyright © Texas Education Agency, 2012. All rights reserved.
8
Copyright © Texas Education Agency, 2012. All rights reserved.
9
Rubric Template
Task Statement: CAD
Task Assignment: CAD Corrections
Criteria Concepts/Skills to be
Assessed
Followed directions
(Possible 4 points)
Vocabulary usage
Novice
1
Criteria Categories
(Novice to Exemplary)
Developing
Accomplished
2
3
Demonstrated no
understanding and
did not follow
directions for
lesson
Understood and
followed some
directions for
lesson
Understood and
followed most
directions for
lesson
Understood and
followed all
directions for
lesson
Did not use proper
vocabulary
Used some
vocabulary
Properly used most
vocabulary
Accurately and
thoroughly used
vocabulary
Incorrect layers,
colors, and/or
placement of
elements
Some correct
layers, colors,
and/or placement
of elements
Mostly correct
layers, colors,
and/or placement
of elements
Accurate layers,
colors, and
placement of
elements
Elements
improperly located
and/or missing
Some elements
properly located
Most elements
properly located
All elements
accurately
located
File unorganized,
improperly named,
contains additional
unnecessary
elements
File unorganized
and improperly
named
File mainly
organized
File accurate,
well organized,
and properly
stored; includes
all elements
(Possible 4 points)
Drawing Format
(Possible 4 points)
Element Location
(Possible 4 points)
CAD File
(Possible 4 points)
Exemplary
4
A = 20 – 17 points
Total Points: 20
B = 16 – 13 points
C = 12 – 9 points
D = 8 – 5 points
F = 4 – 1 points
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10
Points
Earned