HSC Design and Technology common mistakes
HSC Design and Technology · Understand the traps and how to avoid them.
Describing the steps the candidate actually took on their own major project ("first I sketched ideas, then I built a model") instead of explaining the purpose and logic of each stage of the design process and why it was sequenced that way.
Candidates rehearse their folio as a chronological diary, so the exam answer becomes narrative recall rather than analysis of how the process generates and refines design solutions.
What to do instead
Practise rewriting project stages as purpose statements: for each stage, state what decision it enabled, what information it produced, and how it changed the next stage. Answer with the process model (identify need, research, ideate, develop, evaluate) as the frame and use the project only as evidence.
Treating evaluation as a single sentence at the end ("the design worked well and met the brief") rather than ongoing evaluation against specific, measurable criteria at each stage.
Students conflate evaluation with a final judgement and have not been taught to convert a design brief into testable criteria, so they have nothing concrete to evaluate against.
What to do instead
Before writing, extract three or four criteria from the brief and express each as a measurable test (dimensions, load, cost, time, user task success). Then write evaluation as evidence against each criterion, stating what was tested, the result, and the resulting design change.
Giving a one-sided account of a technology's social or environmental impact, listing only benefits or only harms, and stopping at description without weighing trade-offs.
Textbook case studies are often presented as either success stories or disasters, and candidates reproduce that framing rather than analysing stakeholders and timescales.
What to do instead
Structure every impact answer as a table in prose: stakeholder group, benefit, cost, and who bears each. Then add a judgement sentence naming which impact dominates and why, and note how the balance shifts between short and long term.
Confusing recyclability with recycled content, or claiming a material is 'eco-friendly' or 'sustainable' without specifying the lifecycle stage, energy source, or disposal pathway being discussed.
Everyday green marketing language is absorbed uncritically, and candidates lack a lifecycle vocabulary to locate a claim at extraction, manufacture, use, or end-of-life.
What to do instead
Use a lifecycle checklist (raw material extraction, processing energy, manufacture, transport, use-phase energy, disposal or recovery) and require every environmental claim in an answer to name the stage and the evidence. Replace 'eco-friendly' with a specific property such as 'can be remelted and reformed without loss of properties'.
Selecting a material or process by name only ('I would use aluminium' or 'I would use 3D printing') without justifying it against properties, quantity, tolerances, cost, or available equipment.
Candidates memorise material names and process names separately from selection criteria, so justification defaults to familiarity rather than fitness for purpose.
What to do instead
Answer with an explicit selection matrix in words: list the three or four required properties or process requirements, compare two or three candidates against each, then state the winner and the trade-off accepted. Always include quantity and tolerance, since these usually decide between processes.
Describing manufacturing steps in the wrong order or omitting the preparatory and finishing operations, for example going straight from raw stock to assembly with no marking out, jigging, or quality check.
Candidates recall the visually memorable step (moulding, welding, printing) and have not internalised the full production sequence or where inspection sits within it.
What to do instead
Learn a generic sequence (prepare stock, set up and jig, form or join, finish, inspect, assemble, test) and apply it to each process. Write process answers as numbered steps with the inspection point named, and state one defect each step could cause and how it is controlled.
Presenting the folio as a record of making rather than an argument for decisions, so pages show photos and lists of materials but no annotated reasoning, no rejected alternatives, and no evidence of user research.
Students equate effort with visible production and believe more images and neater presentation earn marks, when the criteria reward documented decision-making.
What to do instead
For each folio spread, write a one-line caption stating the decision it evidences and the evidence behind it. Keep a short 'rejected options' section with reasons, and attach raw user research data (quotes, counts, test results) rather than summaries alone.
Leaving the design brief vague and unmeasurable ('design an attractive storage solution for teenagers') and then never revisiting it, so the project has no fixed reference point for evaluation or constraints.
Candidates want creative freedom and fear that constraints will limit ideas, so they write broad briefs and treat them as an opening formality.
What to do instead
Write the brief as a set of constraints and criteria with numbers (capacity, dimensions, budget, deadline, target user, mandatory standards) and display it on every evaluation page. Test it by asking whether a stranger could judge a finished design against it without further explanation.
Describing an innovation as merely 'new' or 'better' without identifying the type of innovation, the problem it solved, and the commercial or adoption pathway that let it succeed.
Innovation is taught through product examples and heroic inventor stories, so candidates miss the business model, distribution, and timing factors that determine success.
What to do instead
Use a fixed frame: what unmet need, what was technically or commercially novel, what enabled it (technology, cost, regulation, distribution), who adopted it and why, and what barriers remained. Compare with a similar product that failed to isolate the decisive factor.
Treating emerging technologies as certain futures ('everything will be 3D printed' or 'AI will replace designers') without qualifying feasibility, cost, regulation, skills, or equity of access.
Media coverage of emerging technology is promotional and speculative, and candidates repeat predictions as facts rather than assessing likelihood and conditions.
What to do instead
For any emerging technology, write three conditional statements: what must be true for it to be widely adopted, who is likely to be excluded or disadvantaged, and what current evidence supports or undercuts the prediction. End with a probability-style judgement and the evidence it rests on.