SHS3 Design And Communication Technology · Semester 1 Week 11: Plane Geometry

Lesson notes

Learning Objectives

Indicator: 3.2.1.LI.2 - Draw auxiliary elevation and plan (primary) of given objects.

By the end of the lesson, learners can:

State the purpose of an auxiliary elevation and an auxiliary plan in technical drawing.
Identify the correct direction of sight (arrow) needed to produce a primary auxiliary view of a given object.
Draw the primary auxiliary elevation of a given object using the fold-line (reference line) method with appropriate drawing instruments.
Draw the primary auxiliary plan of a given object using the fold-line (reference line) method with appropriate drawing instruments.
Measure and transfer true lengths, widths and heights accurately from given orthographic views to auxiliary views.

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Curriculum details

Strand: Geometry (Strand 2)
Sub-strand: Plane Geometry (2.1)
Content standard: 3.2.1.CS.1 - 3.2.1.CS.1 Apply the concept of plane geometry in applied technology. 3.2.1.LO.1 Use the concepts of plane geometry to construct complex plane geometrical shapes and design different complex artefact based on plane geometrical figures
Indicator: 3.2.1.LI.2 - Draw auxiliary elevation and plan (primary) of given objects.
Suggested placement: Semester 1, Week 11 (Week 11 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. 90

Exemplars (from the NaCCA curriculum)

Managing talk for learning, Activity- based learning:
1. Demonstrate the construction of primary auxiliary elevation and plan to learners using appropriate drawing instruments
2. Help learners individually to construct primary auxiliary elevation and plan of given objects using the appropriate drawing instruments.

Assessment (3.2.1.AS.2). The document marks these depth-of-knowledge levels for this indicator: Level 3 Strategic reasoning.

Teaching and Learning Materials:
- Models
- Charts
- reference books
- drawing studio
- access to internet
- LCD Projector, sketches
- Pencils
- Erasers
- Pencil sharpener
- Sketch pads
- Drawing pens or ink
- Blending stumps
- Charcoal