46 exam-style questions on Extended Response — topic SK.Extended_response of Skills in the IB Design Technology syllabus — with answers and explanations. Samples below; the full set is free with an account.
A Paper 2 part-question reads 'Outline two reasons why a manufacturer would specify a snap-fit joint instead of an adhesive joint.' and carries 2 marks. What does the tariff tell the candidate about the expected answer?
Answer: Two brief points, one per mark
The mark tariff is the length instruction, and here the stem asks for two reasons, so the two marks are split one per reason rather than spent on one developed point. Adding a judgement wastes time because 'Outline' carries no marks for evaluation.
A section offers two extended responses of equal value: one begins 'Discuss', the other begins 'Justify'. What is the essential difference between the answers they require?
Answer: Discuss reviews both sides before concluding, while Justify defends one stated decision
'Discuss' asks for a balanced review that ends in a conclusion, so the opposing case has to be built before the position is taken. 'Justify' starts from a decision already made and spends the marks on the reasons and evidence that support it, which is why an even-handed answer to a 'Justify' task scores poorly.
A stimulus table gives the mass of two kettle bodies: stainless steel 780 g and polypropylene 410 g. Which sentence uses the tabulated data in the way a markscheme credits?
Answer: The steel body is 370 g heavier, so lifting effort rises
A data-reference mark needs the quoted value with its unit and the consequence drawn from it; restating that the table exists, or replacing the figure with a vague comparative, earns nothing. General material knowledge that ignores the stimulus is the third common failure.
A 12-mark task asks: 'To what extent should a manufacturer of school chairs prioritise design for disassembly over low unit cost?' Which feature is demanded by the top mark band but not by the lower bands?
Answer: A judgement that weighs both criteria
'To what extent' is answered by a reasoned position on the balance between two competing criteria, so the judgement is the band discriminator. Paragraphing, a named material and a definition can all be present in a mid-band answer that never sets the two criteria against each other.
Which command term requires an account of the differences between two design solutions in which both solutions are referred to throughout?
Answer: Contrast
'Contrast' sets out the differences while keeping both solutions in view throughout, which is why it also forms the second half of the combined term 'compare and contrast'. 'Distinguish' also concerns differences, but it only requires the boundary between two concepts to be made clear, as in quality control against quality assurance, rather than a sustained side-by-side treatment.
A candidate reaches the final 12-mark extended response of a written paper with 30 minutes left and no other question outstanding. What is the most effective use of that time?
Answer: Plan for two minutes, then write the extended response in one pass
With one task left, the whole of the remaining time belongs to it, and the two minutes given to a plan protect the balance and judgement marks that a blind first draft loses. Detail added to short answers that already sit at their tariff earns nothing at all.
That was 6 of 46 Extended Response questions.
Practise all 46 freeOutlineAO2 · 1–3 marks
A brief account or summary: the main points in two or three sentences, no evaluation.
DistinguishAO2 · 1–3 marks
Make the difference clear for BOTH terms — a definition of one of them is only half an answer.
46 Extended Response questions — free with an account. Spaced repetition, streaks and full exam simulations included.
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