Technical Drawing

  • The Technical Drawing classes will enable the student to develop skills and attitudes that will allow them to effectively model and communicate technical information. This will be accomplished through a graded series of guided exercises and individual projects. The Technical Drawing classes will introduce students to the visual language used by designers throughout history, both as a problem solving tool and as a means of communication.  Students will use a variety of tools, including both traditional tools and the computer, to produce technical graphics and models demonstrating the different methods of visualization. This course is open to all students. Class size is limited to classroom workstations. 


    Links to Academic Expectations:

    Students will:

    1.  improve communication skills by:
      1. reading information about principles of content information such as engineering design and technical manuals on operating CAD systems
      2. communicating with other students either in team design projects or as peer-tutors, or to adults in describing the work they are involved in.
      3. carefully listening to instructions
      4.  looking at and creating technical graphics
    2. improve problem-solving skills by:
      1. identifying communication problems
      2.  brainstorming design proposals
      3. developing and critiquing design solutions
    3. improve information literacy by:
      1.  researching various technical content sources.
      2.  interviewing specialists to collect information for a design problem
      3.  using technical writing/tutorials to improve their proficiency with technical systems
      4. researching modeling methods and techniques
    4.  improve artistic appreciation and expression by:
      1. designing technical graphics for the solutions to a variety of communications/design challenges
      2. completing a 3-d model of designs.
    5. use technology by: 
      1. learning more about the nature of Technology
      2. learning about the relationships between technology and society
      3. learning more about the design process
      4. apply the design process in using and maintaining technological systems and products and assessing their impact 


    Interdisciplinary Connections:

    Technical Drawing is a method of communication that relies on visual language to create 2d and 3d models to communicate technical information. Technical graphics can be used to organize and describe data, patterns and relationships, and geometric sizes and shape. This graphical representation of technical information is used in all academic disciplines and can be used to design any graphic or picture used to illustrate techniques or concepts in those disciplines. Examples could include Geometric Constructions, Line Designs, Data Graphing, Cartography, and Graphic Design.


    Essential Questions:

    1.      What is technology?

    2.      How do we communicate?

    3.      What is the difference between information and data?

    4.      How do we recognize/use patterns?

    5.      What is a model?

    6.      How do we represent technical information?


    Instructional Units:

    Each semester long segment of the Technical Drawing continuum may be taken either one semester at a time or as a full year course.  The units are designed so that if students leave after one semester and return later in their academic career, they can pick up where they left off.  Students work at their own pace, but, due to the cumulative nature of the work, they are expected to master a unit before moving on to the next.  In the course of this continuum, students will be challenged to design independent challenges that will allow them to apply Technical Graphics techniques they have learned. The focus of all units in this class will be on the following Standards for Technological Literacy.

    • 3 - The relationships among Technologies and the Connections between Technology and other Disciplines
    • 8-13 - Design
    • 17 - Information and Communication Technologies  
    (Codes in parentheses refer to Student Performance Outcomes for grades 9-12 from NH Technology Education Curriculum Guide)

    1. Introduction to concepts of technology (A2, A3, A4, B1,H1)
      1. The activities of technology
        1. Production/manufacturing
        2. Construction
        3. Transportation/ Power/energy
        4. Biotechnology
        5. Communications
      2. Principles of communications
        1. Symbols/Codes
        2. Concepts of modeling
        3. The communications loop/designing a message
        4. Noise
        5. Properties of technical communications
        6. Communications-related careers
    2. Introduction to the tools used in technical graphics (A1, A2, B1, C1, D1, E1, F1, F2)
      1. Basic tools:
        1. Marking tools
        2. Media
        3. Sketching
        4. Scale
        5. Drawing Aids
        6. Reproduction tools
      2. Basic computer aided drawing/design
        1. Hardware
          1. Input/output controls
          2. Data storage/file management
          3. Network setup/security
          4. Hardcopy
        2. Software
          1. 2d Entity generation and modification
    3. Principles of Geometric Construction
    4. Basic methods of projection/perception and illusion
      1. Principles of orthographic projection
        1.  Multiview drawings
          1. Planes: Normal, Inclined, Oblique, Curved
          2. Point identification
      2. Principles of pictorial representation
        1. Oblique views: Cabinet, Cavalier, Normal
        2. Isometrics
        3. Perspectives: 1 point & 2 point
    5. Advanced projection methods
      1. Auxiliary Views
        1. Primary auxiliaries: full, partial
        2. Secondary auxiliaries
      2. Revolutions
      3. Section views: Full, Half, Offset, Broken-out, Revolved, Removed, Assembly
        1. Material symbols
        2. Drafting conventions
    6. Communicating technical details
      1.  Size dimensions
      2. Location dimensions
      3. Tolerances
      4. Production drawing
      5. Detail drawings
      6. Assemblies
      7. Exploded assemblies 

    Student Outcomes:  Students will:

    1. understand and describe communication technology, its associated industries, occupations, processes, products, and services, and the opportunities it affords a student for meaningful education & employment. (A3, A4, H1)
    2. identify terms & definitions used in communications technology. (A2, B1)
    3. use drafting techniques, design details, and message production. (B1, C1)
    4. apply visual-communication techniques as a problem-solving tool.(D1, E1)
    5. apply design principles to the composition & layout of an activity.(C1)
    6. produce projects using a variety of image generation methods. (B1, E1)
    7. describe objects accurately using the principles of shape & size description. (A1, C1)
    8. evaluate communications systems. (F1, F2)
    9. plan, schedule and manage a communication activity or project.(E1)
    10. safely use a variety of materials and tools that are appropriate to complete a task in communications systems. (A2, C1)

    Codes in parentheses refer to Student Performance Outcomes for grades 9-12 from NH Technology Education Curriculum Guide


    Methods of Instruction:

    1. Performance-based assessments
      1. Instructor’s observation of safe and proper tool and material use
      2. Achievement of Civic and social standards through demonstrated workplace skills
    2. Portfolio Assessment
      1. Portfolio consists of
        1. Sketches, TRAD and CAD Drawings
        2.  Student Notes
        3. Successful construction of assigned and student designed projects.
        4. Related communications technology projects
    3. Student Self Assessment 


    Lesson Extensions:

    1. Independent design or communications projects using technical graphic methods for home or school-based outside assignments /challenges. (output will vary with nature of project)
    2. Readings based on information/communications technology related subjects.
    3. Graphically explore interdisciplinary concepts like polyhedra, string design, tessellations, symmetry, cartography etc.
    4. Participation in design-based competitions like Destination Imagination or the Technology Student Association.
    5. Peer tutoring 

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