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SingaporeDesign and Technology

Design Communication and Sketching

4 dot points across 4 inquiry questions. Click any dot point for a focused answer with worked past exam questions where available.

Why is freehand sketching a designer's main thinking tool, and which techniques make sketches clear and quick?

Use freehand sketching techniques, including construction lines, crating and basic proportion, to communicate and develop design ideas quickly
A focused answer to the O-Level Design and Technology outcome on freehand sketching. Construction lines, crating, proportion and line quality, and why sketching is a thinking and communicating tool.
7 min answer →

How does orthographic projection give the precise, dimensioned views needed to make a product?

Produce and interpret orthographic drawings using first-angle projection, with front, side and plan views, correct dimensioning and line conventions
A focused answer to the O-Level Design and Technology outcome on orthographic projection. First-angle projection, front, side and plan views, dimensioning, line types and why it is used for making.
8 min answer →

How do isometric and oblique drawings show an object in three dimensions, and when is each used?

Produce isometric and oblique pictorial drawings to show objects in three dimensions, and explain the conventions and uses of each
A focused answer to the O-Level Design and Technology outcome on pictorial drawing. Isometric and oblique projection, their conventions and angles, and when each is used to show a 3D object.
7 min answer →

How do rendering and annotation turn a plain sketch into a clear, informative communication of a design?

Use rendering to show material, form and texture, and use annotation to explain design decisions, so that drawings communicate both how a product looks and how it works
A focused answer to the O-Level Design and Technology outcome on rendering and annotation. Showing material, form and texture through rendering, and explaining decisions through clear annotation.
7 min answer →