What idea-generation techniques are used in O-Level Design and Technology?

Common techniques include brainstorming (rapidly listing many ideas without judging them), mind mapping (branching from a central problem to link related ideas), morphological analysis (a chart that combines options for each feature to create new combinations) and SCAMPER (a checklist prompting you to Substitute, Combine, Adapt, Modify, Put to another use, Eliminate and Reverse). The aim is a wide range of varied ideas rather than the first thing that comes to mind.

SCAMPER is a creativity checklist that prompts seven ways to change an existing idea or product: Substitute (swap a part or material), Combine (merge features), Adapt (borrow from elsewhere), Modify or Magnify (change size or shape), Put to another use, Eliminate (remove a part), and Reverse or Rearrange. Working through each prompt forces fresh ideas you would not reach by free thinking alone.

How does a designer select the best idea objectively?

By judging each idea against the design specification rather than personal preference. A common tool is a weighted evaluation matrix: list the specification criteria, give each a weighting for importance, score each idea against each criterion, multiply by the weighting and total the scores. The idea with the highest weighted total is the strongest fit, and the matrix gives a justified, objective reason for the choice.

What does developing and refining an idea involve?

Taking the chosen idea and improving it step by step through annotated sketches, modelling and testing, justifying each change against the specification. Development is where a promising but rough idea becomes a workable, detailed solution: you resolve sizes, materials, joints and mechanisms, test each change, and keep what meets the specification. Examiners reward visible, justified development rather than a single jump to a finished design.

SingaporeDesign and Technology

Idea Generation and Development: how Singapore O-Level Design and Technology designers generate a wide range of ideas, select the best objectively, and develop and refine it through modelling and testing

Q: Why do designers build models and prototypes?

Because an idea on paper cannot be fully tested. Models let you check a design in three dimensions: quick study models test form and proportion, mock-ups test fit and ergonomics, and working prototypes test function. Building and testing models gathers real evidence that feeds refinement, catching problems while they are still cheap and easy to fix.

A Singapore O-Level Design and Technology (SEAB 7059) module overview of idea generation and development. Brainstorming, mind mapping, morphological analysis and SCAMPER, selecting with a weighted matrix, modelling and prototyping, and refining a chosen idea against the specification, with links to every dot point.

Generated by Claude Opus 4.87 min readSEAB-7059Updated 2026-06-13

Reviewed by: AI editorial process; not yet individually human-reviewed

Jump to a section

What this module covers
Producing a range of ideas
Choosing objectively
Testing in three dimensions
Refining the chosen idea
How this module is examined
Check your knowledge

What this module covers

Idea Generation and Development is the creative heart of O-Level Design and Technology (SEAB 7059), and it is where the Design Project earns or loses many of its marks. The skill is not just having ideas but having many varied ones, choosing between them objectively, and then refining the chosen idea into something that genuinely works. The written paper tests the techniques and the logic; the Design Project tests whether you can actually do it. This overview links the four dot points: generating ideas, selecting the best, modelling, and developing.

See the full set of dot points for this module under /sg-o-level/design-and-technology/syllabus/idea-generation-and-development.

Producing a range of ideas

The first rule is quantity before quality. The idea-generation techniques dot point covers brainstorming, mind mapping, morphological analysis and SCAMPER, each a structured way to push past the first obvious answer to a wide spread of possibilities. A wide range matters because the best solution is rarely the one you think of first, and you cannot choose well from a single idea.

Choosing objectively

Once you have many ideas, you must choose well. Selecting the best idea judges each idea against the design specification, often using a weighted evaluation matrix: criteria are weighted by importance, ideas are scored and multiplied through, and the highest weighted total wins. This turns "I like this one" into a justified, objective decision the examiner can follow.

Testing in three dimensions

A drawing only goes so far. Modelling and prototyping uses study models, mock-ups and working prototypes to test ideas in three dimensions and gather evidence. Quick models test form and proportion, mock-ups test fit and ergonomics, and working prototypes test function, each catching problems early while they are cheap to fix.

Refining the chosen idea

The chosen idea is rarely finished. Developing and refining ideas is the step-by-step improvement through annotated sketches, modelling and testing, justifying each change against the specification. This is where rough ideas gain real sizes, materials, joints and mechanisms. Examiners reward visible, justified development over a single leap to a polished result.

Selecting between three ideas with a weighted matrix

Three handle designs are scored out of 5 against three specification criteria: comfort (weighting 3), durability (weighting 2) and cost (weighting 1).

Step 1: Set up the matrix

List the criteria with their weightings, and the raw scores out of 5 for each idea:

Criterion (weight)	Idea A	Idea B	Idea C
Comfort (3)	4	5	3
Durability (2)	3	3	5
Cost (1)	5	2	4

Step 2: Multiply each score by its weighting

Idea A: comfort $4 \times 3 = 12$ , durability $3 \times 2 = 6$ , cost $5 \times 1 = 5$ . Idea B: $5 \times 3 = 15$ , $3 \times 2 = 6$ , $2 \times 1 = 2$ . Idea C: $3 \times 3 = 9$ , $5 \times 2 = 10$ , $4 \times 1 = 4$ .

Step 3: Total the weighted scores

Idea A: $12 + 6 + 5 = 23$ . Idea B: $15 + 6 + 2 = 23$ . Idea C: $9 + 10 + 4 = 23$ .

Step 4: Interpret a tie

All three tie at 23, which tells you the criteria or weightings do not separate the ideas yet. Refine the matrix: add a criterion (for example ease of manufacture), or re-weight if comfort truly matters most. The matrix has done its job by exposing that the choice is genuinely close and needs sharper criteria, which is itself a justified, objective finding.

How this module is examined

Generate widely and name your method. Show several varied ideas and the technique used (brainstorming, SCAMPER and so on).
Select with a justified tool. Use a weighted matrix and explain the criteria, weightings and result.
Model to gather evidence. Match the model type (study, mock-up, working prototype) to what you need to test.
Develop visibly. Justify each change against a specification point, supported by annotated sketches and model evidence.

Check your knowledge

Short and calculation questions across the module. Attempt them, then check the worked solutions.

State what the letters in SCAMPER stand for. (3 marks)
Explain why a designer aims for a wide range of ideas rather than developing the first one. (2 marks)
In a weighted matrix, an idea scores 4 for comfort (weighting 3) and 2 for cost (weighting 1). Calculate its total weighted score for these two criteria. (2 marks)
Name the model type best suited to testing the function of a mechanism. (1 mark)
State one feature of strong development that examiners reward. (1 mark)

Sources & how we know this

Singapore-Cambridge GCE O-Level Design and Technology (Syllabus 7059) — Singapore Examinations and Assessment Board (2026)