Lesson at a Glance | He Tirohanga Whakamua
Ngā Whāinga Ako | Learning Intentions
Students will know
- How a formal Design Brief functions as the binding contract between technologist, client, and environment.
- The 6 core technological attributes required for fit-for-purpose evaluation in the NZ Curriculum.
- How to integrate sustainability and kaitiakitanga specifications as non-negotiable criteria alongside cost and usability.
Students will demonstrate
- By drafting a comprehensive, fit-for-purpose Design Brief containing problem statement, target user, 6 attributes, and kaitiakitanga constraint.
- By completing Design Journal Section 7: Design Brief following peer review.
Do Now | Tīmatanga Whakaaro (10 min)
Scenario Analysis:
"An engineering team builds a electric bike that travels 100 km/h, costs $50, and looks amazing — but the battery explodes if it rains. Did they succeed or fail as technologists?"
Unpack: A technology outcome that fails one critical attribute (safety) is a complete failure, regardless of how well it performs in other areas. A formal Design Brief defines all required attributes before prototyping begins so technologists don't trade away safety or sustainability for cheapness.
The 6 Fit-for-Purpose Attributes (15 min)
1. Usability / Hangarau Tangata
Intuitive interface, accessible ergonomics, clear feedback for users.
2. Reliability / Manawa Tītī
Performs consistently over intended lifespan without unexpected failure.
3. Efficiency / Toka Tū Moana
Minimal energy and resource losses during operation and production.
4. Safety / Haumarutanga
Presents zero risk of harm to users, assemblers, or ambient environments.
5. Cost-Effectiveness / Ōhanga
Fair manufacturing cost without relying on exploitative labour or un-costed pollution.
6. Sustainability / Kaitiakitanga
Closed-loop material recovery, zero toxic landfill, bio-compatible or recyclable.
Activity: Peer Brief Swap & Audit (15 min)
Students pair up and review each other's draft briefs using the Peer Audit Checklist:
- ❓ Is the Problem Statement specific? Does it clearly name the product and environmental harm?
- ❓ Are all 6 attributes defined? Does each attribute have a testable measure (e.g. "disassembles in <3 minutes" vs "easy to take apart")?
- ❓ Is the Kaitiakitanga constraint binding? If you removed the kaitiakitanga rule, would the design change? (If no, make it stricter!).
📓 Design Journal — Section 7: Design Brief
Students open their Design Journal and write Section 7:
Section 7 Structure:
1. Problem & Target User: [Who needs this outcome and why?]
2. Fit-for-Purpose Specifications: [Measurable targets for Usability, Reliability, Efficiency, Safety, Cost, and Sustainability]
3. Non-Negotiable Kaitiakitanga Constraint: [The binding rule established in Lesson 6]
4. Available Resources & Materials: [List of approved sustainable materials for Lesson 8's prototype]
Exit Verification | Ka Mutu Hoki (5 min)
Exit Check:
"My Design Brief is complete with all 6 attributes defined and a peer-reviewed Kaitiakitanga constraint ready for prototyping in Lesson 8."
Teacher Planning & Curriculum Alignment
NZ Curriculum Alignment (Technology — Phase 3 / Years 9–10):
- Brief Development: Formulate a brief that articulates the fitness for purpose of a key technological outcome, taking into account physical and functional attributes.
- Outcome Evaluation: Evaluate technological concepts against brief specifications.
Vocabulary: Design brief, fit-for-purpose, technological attributes, specifications, peer audit, binding constraints.