SHS2 Design And Communication Technology · Semester 2 Week 13: Mechanical Drawing

Lesson notes

Learning Objectives

Indicator: 2.3.2.LI.3 - Draw the sectional views of machine parts and components with drawing instruments.

By the end of the lesson, learners can:

Explain the purpose of a sectional view in mechanical drawing and state when it is necessary.
Identify and label the standard features of a sectional view, including the cutting plane line, section lines (hatching), and visible edges behind the cut.
Draw a full sectional view of a given machine part (such as a bush bearing or coupling) using drawing instruments, following the correct line weights and conventions.
Apply the principle of hatching at 45 degrees with uniform spacing to represent the cut surfaces of a machine component.
Evaluate their own and peers’ sectional drawings against a given checklist of sectioning principles, giving constructive feedback.

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: Extended Drawing (Strand 3)
Sub-strand: Mechanical Drawing (3.2)
Content standard: 2.3.2.CS.1 - 2.3.2.CS.1 Understand the concept of building drawing. 2.3.2.LO.1 Make accurate sectional drawings of machine parts or components, adhering to the principles of sectioning in engineering. 2.3.2.LO.2 Use your understanding on the principles of electrical circuit and circuit diagrams to explain electrical circuit and circuit diagrams,
Indicator: 2.3.2.LI.3 - Draw the sectional views of machine parts and components with drawing instruments.
Suggested placement: Semester 2, Week 13 (Week 33 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. 74

Exemplars (from the NaCCA curriculum)

Activity-based learning, Problem - based learning: With the use of real objects, models, board illustration and with an understanding of the concept of sectioning, guide learners to draw the sectional views of some complex machine parts and components.

Assessment (2.3.2.AS.3). The document marks these depth-of-knowledge levels for this indicator: Level 4 Extended critical thinking and reasoning.

Teaching and Learning Materials:
- Models
- Charts
- Reference books
- Drawing studio
- Drawing instruments
- Access to internet
- LCD Projector