Design and Drawing for… · SHS3 Manufacturing Engineering

Lesson notes

Learning Objectives

Indicator: 3.2.1.LI.1 - Outline the importance of the representation of materials and machine components in production drawing.

By the end of the lesson, learners can:

Identify at least five standard conventions used to represent materials (metals, wood, glass, concrete, liquids) and machine components (screw threads, springs, gears, bearings, shafts) in production drawings.
Explain why standardised representation of materials and machine components is important for clear communication between designers, manufacturers, and technicians.
Match the correct symbolic representation to the corresponding material or machine component when given a sample production drawing.
Draw at least three standard conventions for representing materials and machine components accurately on a grid sheet.
Discuss, in small groups, the consequences of misinterpreting a material or component representation in a real manufacturing setting.

Sign in with your phone number to read the full note and download the GES plan - free.

Sign in with phone number

Curriculum details

Strand: Design and Prototyping (Strand 2)
Sub-strand: Design and Drawing for Manufacture (2.1)
Content standard: 3.2.1.CS.1 - Demonstrate knowledge and understanding of the importance of the representation of materials and machine components in production drawing. 3.2.1.LO.1 Understand the representation of materials, machine components, limits, and fits in production drawings.
Indicator: 3.2.1.LI.1 - Outline the importance of the representation of materials and machine components in production drawing.
Suggested placement: Semester 1, Week 13 (Week 13 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 85

Exemplars (from the NaCCA curriculum)

Experiential Learning: Bring a typical production drawing to class and lead learners to identify conventions of materials and machine components used in production drawing (such as representations for metals, glass, packing and insulating materials, wood, concrete, liquids, shafts, pitch, bearings, screw threads, springs, and gears).
Talk for Learning: Lead learners to discuss the importance of representing materials and machine components in production drawing.
Collaborative Learning: Individual learners practice the drawing of the conventions in representing material and machine components in a production drawing. Learners share drawing and received comments in a tolerant manner.
Teaching and Learning Materials:
- Sample production drawings
- Textbooks
- Library resources
- Internet access
Assessment (3.2.1.AS.1). The document marks these depth-of-knowledge levels for this indicator: Level 1 Recall; Level 2 Skills of conceptual understanding; Level 4 Extended critical thinking and reasoning.