Lesson at a Glance | He Tirohanga Whakamua
NgΔ WhΔinga Ako | Learning Intentions
Students will know
- The three pillars of sustainability (Environmental / Taiao, Social / Tangata, Economic / Εhanga).
- Kaitiakitanga as a fourth lens β guardianship as obligation to the future, not just the present.
- That "sustainable" is a specific, testable claim β not a marketing word.
Students will demonstrate
- By auditing a technology product against all four lenses and identifying at least one genuine tension.
- By writing Design Journal Section 1 β a clear personal statement of what they now mean by "sustainable."
Do Now | TΔ«matanga Whakaaro
Write on the board, give 3 minutes silent thinking, then 5 minutes pair:
"Is water sustainable? Is concrete? How are they different?"
This question is designed to surface exactly the confusion the lesson resolves. Most students will say water is sustainable "because it's natural" and concrete is not "because it's made in a factory." Both answers are partially right, partially wrong, and the lesson will explain why. Do not correct them yet β harvest the responses on the board and return to them at the end of the lesson. The contrast will land harder if students can see their own thinking change.
Teacher note: Water in Aotearoa is increasingly contested β extraction rates for irrigation in Canterbury are exceeding natural replenishment in some catchments. Concrete is problematic (cement is ~8% of global COβ) but can be made sustainably. Neither answer is simple. The point is not to teach a fact but to dislodge "natural = sustainable."
Three Pillars | NgΔ Pou e Toru (15 min)
Introduce the three-pillars framework through cases, not definitions. For each pillar, give one NZ example where technology either supported or undermined it.
π Environmental / Taiao
Does this technology protect ecosystems, reduce pollution, and conserve resources β or does it extract, degrade, and deplete?
NZ case: The chain of eight hydro stations on the Waikato River is one of the country's largest sources of renewable generation (environmental win) but have flooded significant wetlands, altered sediment flows, and blocked fish migration (environmental loss). Both are true.
π₯ Social / Tangata
Does this technology improve health, equity, and community wellbeing β or does it concentrate benefits for some while externalising costs onto others?
NZ case: Fibre broadband reaches 87% of NZ homes. The households still without it are disproportionately rural, and rural MΔori communities are among those most affected. A technology that connects some and isolates others is not socially sustainable β even if the technology itself is excellent.
π° Economic / Εhanga
Is the business model behind this technology viable long-term β or does it depend on externalising costs, exhausting finite resources, or treating wages as a variable to minimise?
NZ case: PΔua farming is economically viable (high value, growing export) but depends on strict harvest limits β an economic model built on kaitiakitanga, not despite it.
Discussion: True sustainability requires balance across all three pillars β and they are in tension as often as they align. A technology that is environmentally excellent but economically unviable will not survive long enough to make a difference. One that is economically profitable but socially harmful will face opposition. The job of a sustainable designer is to find the zone where all three can coexist.
The Kaitiakitanga Lens (15 min)
The three pillars are a useful framework β but they are not quite enough. They ask "is this sustainable for us now?" Kaitiakitanga asks a harder question: "What are our obligations to those who come after us β human and non-human?"
Kaitiakitanga is a MΔori concept of guardianship of the natural world. It does not treat nature as a resource to manage. It treats the environment as an ancestor, a relative, a living system with its own mana. The obligations of kaitiakitanga are not just about resource management β they are about relationship. What kind of relationship does this technology create between humans and the environment? Is it extractive or reciprocal?
A temporary restriction on harvesting in an area β allowing ecosystems to recover. This is a technology: a social mechanism for managing the relationship between people and the environment. Centuries before Western conservation science, MΔori were practising sustainable yield management.
The life force of a place. When the mauri of a river or a forest is diminished β by pollution, overharvest, or severed connection to its source β it signals ecological harm. Maintaining mauri is a design criterion, not a feeling.
Everything has a genealogy β including a technology. Who made it? Who benefits? Who bears the cost? Whakapapa-thinking asks designers to trace the full chain of relationships a technology creates, not just the outcomes at the point of use.
Key distinction: Kaitiakitanga is not the same as environmentalism. Environmentalism typically frames nature as something to protect from human interference. Kaitiakitanga frames humans as part of nature, with specific obligations to maintain the health of the whole system. The difference matters for design: a kaitiakitanga designer is not trying to minimise their impact, they are trying to make the relationship reciprocal.
Product Audit | Δta Tirohia (15 min)
Each student picks ONE technology they use daily β a phone, a water bottle, a pair of shoes, a food product in plastic packaging β and audits it against all four lenses. They should work individually for 8 minutes, then share with a partner.
What environmental costs does making this technology create? What happens when it is disposed of?
Who benefits from this technology? Who made it, and under what conditions? Does it reach everyone who needs it?
Is the business model sustainable? Does the price reflect the true cost β including environmental and social externalities?
What kind of relationship does this technology create between humans and the environment? Is it extractive or reciprocal?
Expect confusion here. Students will not have the information to fully answer these questions β and that is the point. The audit reveals what we do not know about the things we use every day. In Lesson 2 and 3, they will learn how to find out.
π Design Journal β Section 1: My Sustainability Lens
Students write their first journal entry. It should take 8β10 minutes and should be in their own words β this is not a summary of the lesson, it is a personal position statement.
- The product I audited: [name it and describe what it does]
- The most surprising thing I found: [one specific finding from the audit β what you did not know before]
- The lens that changed how I saw it most: [which of the four lenses β environmental, social, economic, kaitiakitanga β shifted your thinking and why]
- My definition of sustainable: [in 1β2 sentences, what does "sustainable" now mean to you? Be specific β not "good for the environment"]
Assessment note: Read these before Lesson 2. If students' definitions are still generic ("caring for the earth"), they need more concrete examples in the next lesson. If they are struggling with the kaitiakitanga lens, plan a brief extension of the Lesson 6 introduction earlier in the sequence.
Exit | Whakamutunga
Return to the board where you wrote students' Do Now answers about water and concrete. Ask: "Has anyone's thinking changed? What would you say now that you would not have said at the start?"
The learning is visible when students can say something like: "Water from the tap in Christchurch is probably sustainable, but water taken from a lowland stream for irrigation during summer is not β because the extraction rate exceeds replenishment." That is a specific, testable claim. That is the thinking this unit builds.
Next lesson: We look at the specific technologies that students use every day and trace where their environmental costs actually land β which is almost never where it looks like from the point of use.
π Teacher Planning Snapshot
Materials & Setup
- Whiteboard space for capturing Do Now responses and returning to them at the end
- Design Journals β physical exercise books or a digital document; students keep one for the whole unit
- Three Pillars summary card (optional handout β the three definitions in brief, for students to glue into journals)
Differentiation
- Entry: Pair students for the product audit. Provide a structured audit template with prompts.
- Extension: Ask students to find a NZ news story (last 12 months) that illustrates one of the four lenses. Bring it to Lesson 2.
- ESOL/ELL: Provide bilingual glossary: sustainable/toitΕ«, environment/taiao, community/hapori, guardianship/kaitiakitanga, life force/mauri.
Curriculum Note
This lesson builds conceptual grounding for the NZ Technology curriculum's fit-for-purpose standard β specifically the requirement that sustainability be evaluated as a genuine design attribute, not a marketing category. The kaitiakitanga framing is consistent with the NZ Curriculum's principle of Treaty of Waitangi.