Life Cycle, Sustainability and Footprints
Following material and energy flows through a product life cycle and evaluating ecological, social and ethical trade-offs.
How to prepare for the GCSE Design and Technology written exam
Move from requirement to evidence, technical principle, comparison and justified decision. Use current board materials separately for the NEA and for full timed-paper rehearsal.
Core concepts
Concept 1
Life-cycle assessment considers raw material extraction, processing, manufacture, distribution, use and end-of-life within a stated boundary.
Exam cue: State the life-cycle stage and the specific input, output or impact.
Concept 2
Circular strategies include durability, maintenance, repair, reuse, upgrade, remanufacture, disassembly and material recovery; recycling is only one option.
Exam cue: Compare impacts per functional use or expected lifetime rather than per item alone.
Concept 3
Ecological and social footprints depend on quantity, energy, water, pollution, labour, communities, transport, lifetime and disposal, so single labels rarely settle a decision.
Exam cue: Identify burden shifting when an improvement at one stage worsens another.
Risk pitfalls and guardrails
Treating recyclable as evidence that an item will actually be recycled.
Guardrail: Do not substitute one board's specialist route or current product claim for the multi-board core, and do not turn written process knowledge into NEA or practical submission material.
Ignoring use intensity and service life in product comparisons.
Guardrail: Do not substitute one board's specialist route or current product claim for the multi-board core, and do not turn written process knowledge into NEA or practical submission material.
Adding unverified environmental claims as permanent facts.
Guardrail: Do not substitute one board's specialist route or current product claim for the multi-board core, and do not turn written process knowledge into NEA or practical submission material.
Memory anchors
Life-cycle assessment
Evaluation of inputs and impacts across defined stages of a product's life.
Circular design
Design that retains product, component or material value through repeated use cycles.
Design for disassembly
Planning connections so components can be separated for repair, reuse or recovery.
Ecological footprint
Environmental demand and impact associated with a material, product or activity.
Burden shifting
Reducing an impact in one place or stage while increasing it elsewhere.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
What stages belong in a product lifecycle assessment?
Why define a functional unit in an environmental comparison?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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