Use one as a fresh guided example or extension after the core task. All quantities and institutions are fictional. A swap changes the life context while preserving that day's target. These worked models are teacher-facing for explanation; if used as an unseen learner task, hide the worked line first. No student shares private financial or household data.
| Day | Swap 1 · worked | Swap 2 · worked |
|---|---|---|
| 1 | Community radio: one studio room can host an interview or a rehearsal at the same hour. The constraint is room time; radio organisers choose; the unused feasible session is forgone. Scarcity does not mean no room exists. | Garden club: one watering crew can cover a herb plot or seedlings in the same hour. The crew is the scarce input; the club chooses; one care task is forgone. Which crop matters more is unknown. |
| 2 | Poster shop: using the final hour for captions forgoes the stated next-best task of printing 18 flyers. Opportunity cost = 18 flyers, not 18 dollars. | Repair café: using two hours for bike checks forgoes the stated next-best task of fixing 5 lamps. Opportunity cost = 5 lamp repairs; users' relative benefit is unknown. |
| 3 | Makerspace: one open slot, laser-cut signs or mending lessons. What = choose a session; how = use the shared equipment safely (method needs specification); for whom = user access criteria unknown. Full use can coexist with unfair access. | Park notice team: one crew, large-type trail maps or directional boards. What = type/quantity; how = staff/material plan; for whom = whose routes get signs. Counting signs alone cannot establish equitable distribution. |
| 4 | Recording room: room/site = land-related input, editor = labour, microphone = produced capital, organiser = entrepreneurial ability. Model incomes respectively rent, wages, interest, profit; no actual payment follows. | Greenhouse: site/water = land/natural input, planter = labour, manufactured tray = capital, coordinator = entrepreneurial ability. Distinguish the coordinator's organising function from their hours of labour; no income figures are stated. |
| 5 | After File G only — reading booth: 4 volunteer-hours; last hour spent on oral help forgoes stated next-best 8 printed guides. Cost = 8 guides, not $8; missing information is who needs either format. | After File G only — festival map desk: a room/site, helper, reusable display and organiser map to land, labour, capital and entrepreneurial ability. These are factor categories, not proof of rent, wages, interest or profit. |
| 6 | Music room mini-PPF: maximum pairs (rehearsals, recordings) = (0,6), (1,5), (2,3). At one rehearsal, maximum recordings = 5. Label both axes before connecting discrete points. | Tool shed mini-PPF: maximum pairs (fixes, guides) = (0,8), (1,7), (2,4). Pair (1,6) is inside because 7 guides are possible with one fix under fixed inputs. |
| 7 | Food garden model: maximum pairs (beds, compost bags) = (0,10), (1,8), (2,5). Moving 1→2 beds forgoes 3 compost bags; this is movement along its frontier, not a capacity shift. | Archive model: maximum pairs (digitised files, catalogues) = (0,9), (1,7), (2,4). (1,5) is inside; (2,7) is beyond the stated maximum. Neither position alone identifies its cause. |
| 8 | Repair tent technique: old maximum at 2 fixes is 4 guides; proposed trial makes (2,6) possible with same stated inputs. One new point suggests an outward opportunity, but does not draw a complete new frontier or establish a real productivity gain. | Studio training: old maximum at 3 recordings is 0 lessons; proposed point is (3,2). Training time and repeatability are unspecified, so mark this a conditional model possibility, not proved national growth. |
| 9 | Library: on-frontier A = 2 pop-ups + 7 repairs, B = 3 pop-ups + 4 repairs. Choosing B for pop-ups forgoes 3 repairs. Which is fairer needs who can attend/use them. | Art room: on-frontier A = 1 mural + 5 workshops, B = 2 murals + 2 workshops. B adds a mural and forgoes 3 workshops; a fairness conclusion needs access and preference evidence. |
| 10 | After File H only — park model: maximum (shade spots, benches) = (0,9), (1,8), (2,6), (3,3). 1→2 shade spots costs 2 benches; (2,5) is inside. | After File H only — media lab: maximum (podcasts, transcript sets) = (0,7), (1,6), (2,4), (3,0). 1→2 podcasts costs 2 transcript sets; the table does not tell which accessibility outcome is better. |
These swaps are illustrative rather than a claim that a real venue, service or country has these trade-offs. For current source work, use the source slot.
SubjectNest original worked swaps © NeuroForgeIO Pty Ltd 2026, CC BY 4.0.