How can products be designed and made to reduce their environmental impact?
The 6 Rs (rethink, refuse, reduce, reuse, repair, recycle) and the ecological and social footprint of products, including finite and non-finite resources and responsible material sourcing.
A focused answer to WJEC A-Level Design and Technology Unit 1 sustainability, covering the 6 Rs (rethink, refuse, reduce, reuse, repair, recycle), finite and non-finite resources, the ecological and social footprint of products, and responsible sourcing such as FSC timber.
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What this dot point is asking
WJEC wants you to use the 6 Rs as a practical framework for reducing a product's environmental impact, to distinguish finite from non-finite resources, and to discuss the ecological and social footprint of design decisions. Sustainability is examined across the whole course, but the foundations sit here: the exam asks you to apply the 6 Rs to a named product, which means concrete design actions, not just definitions.
The answer
The 6 Rs
- Rethink - challenge whether the product, or the way it is made and sold, needs to exist in its current form. Could a service replace the product, or a refill model replace single use?
- Refuse - leave out what is not needed: unnecessary packaging, extra parts, mixed materials.
- Reduce - use less material and energy: lightweight parts, design out waste, cut the number of components.
- Reuse - design the product (or its parts and packaging) to be used again or repurposed rather than discarded.
- Repair - design so worn or broken parts can be replaced, extending the product's life (modular design, standard fixings, available spares).
- Recycle - choose single, clearly identified materials that can be recovered and remade, and design for disassembly so they can be separated.
Finite and non-finite resources
Renewable does not automatically mean sustainable: a forest is only renewable if it is replanted faster than it is felled, which is why certification matters.
Ecological and social footprint
A product's ecological footprint is the total environmental burden across its life: resource depletion, energy used in extraction, processing and transport, emissions and pollution, and waste at end of life. Its social footprint covers the human impact: fair pay, safe working conditions and the effect on communities in the supply chain. Good designers consider both, not just the product in the shop.
Responsible sourcing
Designers can lower impact by specifying responsibly sourced materials: timber certified by the Forest Stewardship Council (FSC), recycled-content materials, and locally sourced materials to cut transport. These choices are a direct, examinable lever a designer controls.
Examples in context
Example 1. A returnable glass milk bottle. Reuse dominates: a single sturdy bottle is washed and refilled many times, so the embodied energy is spread over dozens of uses, beating a recycled single-use carton on impact despite glass being heavy. It shows reuse outranking recycle.
Example 2. FSC-certified flat-pack furniture. Specifying FSC timber addresses responsible sourcing, flat-pack design reduces transport volume and emissions, and standard cam-and-dowel fixings allow disassembly and repair, applying reduce, repair and recycle through the design itself.
Try this
Q1. List the 6 Rs in order. [3 marks]
- Cue. Rethink, refuse, reduce, reuse, repair, recycle.
Q2. Explain why designing a product for disassembly supports recycling. [3 marks]
- Cue. Disassembly lets different materials be separated cleanly at end of life, so each can be recycled into a good-quality material rather than being contaminated or sent to landfill as a mixed product.
Exam-style practice questions
Practice questions written in the style of WJEC exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
WJEC 20186 marksUsing the 6 Rs, explain how a designer could reduce the environmental impact of a plastic drinks bottle.Show worked answer →
A strong answer applies several of the 6 Rs specifically to the bottle rather than defining them in the abstract.
Rethink: redesign the product or business model, for example a refillable bottle and a refill scheme so one bottle replaces many. Refuse: avoid unnecessary material, such as removing the separate plastic sleeve label. Reduce: lightweight the bottle so it uses less polymer per unit (thinner walls, less material in the base). Reuse: design the bottle to be durable and refillable so it is used many times rather than once.
Repair is less relevant to a bottle, which a good answer acknowledges, showing judgement. Recycle: use a single, clearly coded recyclable polymer (such as PET) and avoid mixed materials and dark pigments so the bottle is easy to sort and recycle into new bottles.
Markers reward applying at least three or four Rs concretely to the bottle, the judgement that not every R fits, and named design actions (lightweighting, single recyclable polymer, refill model).
WJEC 20204 marksExplain the difference between finite and non-finite resources, giving one example of each used in product manufacture.Show worked answer →
A finite (non-renewable) resource exists in a fixed amount and cannot be replaced within a human timescale once used. Examples include crude oil (the feedstock for most polymers) and metal ores such as iron ore and bauxite. Using finite resources depletes a limited stock, which is a sustainability concern.
A non-finite (renewable) resource can be replenished naturally within a human timescale if managed responsibly. Examples include timber from sustainably managed and replanted forests, and natural fibres such as cotton and wool. These can be renewed, although only if harvesting does not outpace regrowth.
Markers reward the definitions (fixed stock that cannot be replaced versus replenishable within a human timescale), a correct example of each, and the qualification that renewable resources are only sustainable if managed responsibly.
Related dot points
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- The wider impact of design - social, moral and ethical issues, inclusive design, standards and legislation, the consequences of consumerism, and the role of enterprise and the designer's responsibilities.
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Sources & how we know this
- WJEC AS/A Level Design and Technology specification — WJEC (2017)