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SingaporeDesign and Technology

Product Evaluation

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

How does a designer judge a finished product fairly, point by point, against the specification it was meant to meet?

Evaluate a product or prototype systematically against each point of the design specification, reaching evidenced judgements and identifying improvements
A focused answer to the O-Level Design and Technology outcome on evaluation. Judging a product point by point against the specification, using evidence, and identifying improvements.
7 min answer →

What is the difference between objective and subjective evaluation, and when does a designer use each?

Distinguish objective from subjective evaluation, recognise the role of each, and combine measured data with informed opinion to judge a product fairly
A focused answer to the O-Level Design and Technology outcome on evaluation types. Objective (measured) versus subjective (opinion-based) evaluation, when each is used, and how to combine them.
7 min answer →

How does a designer judge the environmental impact of a product across its whole life, from materials to disposal?

Evaluate the environmental impact of a product across its life cycle, applying the 6Rs of sustainable design to reduce that impact
A focused answer to the O-Level Design and Technology outcome on sustainability. The product life cycle, environmental impact at each stage, and the 6Rs of sustainable design.
8 min answer →

How does a designer gather reliable evidence about a product through testing and user feedback?

Plan and carry out fair testing of a product and gather user feedback, and use the results as evidence to evaluate and improve the design
A focused answer to the O-Level Design and Technology outcome on testing. Fair tests, functional and user testing, gathering feedback, and using results as evidence to improve a design.
7 min answer →