How do I practise IB Design Technology Sustainability and the product life cycle?

Revise the free lesson on Sustainability and the product life cycle (4.2), then submit your response for criterion-based marking. IB examiners use markbands — our /mark tool scores band-by-band against the official descriptors.

What assessment criteria apply to Sustainability and the product life cycle?

IB Design Technology uses markbands and assessment criteria. Upload your answer for structured feedback on Sustainability and the product life cycle.

Is Sustainability and the product life cycle (4.2) free on MarkScheme?

Yes — the lesson, flashcards, and criterion practice marking for Sustainability and the product life cycle are 100% free. No sign-up required to start revising.

IB Design Technology HL · P3 HL

Sustainability and the product life cycle

Design TechnologyTopic 4.2

Practice task

IB practice — Sustainability and the product life cycle Paste or upload your response for feedback on: Sustainability and the product life cycle.

Your answer to Sustainability and the product life cycle (4.2)

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Worked example

What a lost mark actually looks like

This answer reaches the right coordinates and still drops a mark. The question asks you to justify — and R marks pay for the reasoning, not the conclusion.

MARKED

80%

Strong

80%

M1f' $(x) = 3x^2 - 6x$ M1 earned
A1 $3x^2 - 6x = 0$ A1 earned
A1 $x = 0$ or $x = 2$ A1 earned
R1local max (0, 4), local min (2, 0)R1 not earned

R1 — withheld
The question says "justifying your answer", and R marks are awarded for the reasoning itself — not for the conclusion. Naming which point is the maximum earns nothing on its own. Evaluate f″ $(x) = 6x$ − 6 at each point (−6 at $x = 0$ , +6 at $x = 2$ ), or show the sign of f′ either side. Two lines of working convert this mark.

Sustainability and the product life cycle — IB Design Technology HL practice

Syllabus point 4.2 on Design Technology HL. Revise the topic, then upload your response for criterion-based marking — band-by-band feedback against official IB assessment criteria, not a generic AI grade.

Criterion practice →Learn Sustainability and the product life cycle Full Design Technology course Design Technology subject hub

Frequently asked questions

How do I practise IB Design Technology Sustainability and the product life cycle?: Revise the free lesson on Sustainability and the product life cycle (4.2), then submit your response for criterion-based marking. IB examiners use markbands — our /mark tool scores band-by-band against the official descriptors.
What assessment criteria apply to Sustainability and the product life cycle?: IB Design Technology uses markbands and assessment criteria. Upload your answer for structured feedback on Sustainability and the product life cycle.
Is Sustainability and the product life cycle (4.2) free on MarkScheme?: Yes — the lesson, flashcards, and criterion practice marking for Sustainability and the product life cycle are 100% free. No sign-up required to start revising.