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e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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> **DRAFT** — under teacher review.
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# Activity — Design a Hot Cross Bun Matrix
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The Hamilton and Alexandra College · Year 12 · 2026
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9e5892 lisa 2026-06-02 06:54:36
SD C04 Hot Cross Bun activity: refocus on the 'which elements to develop further' C4-2 deliverable Drop the stress-test step (tangential to the new focus) and replace with a new Step 4 — Decide what to develop further. Teaches two sources for the develop-further list: (a) where the winner scored weakest in the matrix, and (b) requirements the matrix didn't score (worked example: packaging — out of the matrix because it doesn't change how the bun eats, but still required to 'attract customers to consider buying it'). Add CHOICE hot cross buns review-and-compare source link. Cross-link the new CHOICE Headphones — Spotting Efficiency and Effectiveness page. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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The fastest way to learn how to *design* an evaluation matrix — and then decide **which elements of the winning design need to be developed further** — is to build one for something real and edible. CHOICE rates hot cross buns with the same discipline it rates headphones; in this activity, so will you. By the end you'll have designed, run, defended a matrix *and* produced a "further develop" list — the exact deliverable for **C4-2** and **Unit 4 Outcome 1**.
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[CHOICE's actual hot cross buns review-and-compare](https://www.choice.com.au/food-and-drink/bread-cereal-and-grains/bread/review-and-compare/hot-cross-buns) is the reference matrix you're learning from.
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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{{Video|src=https://www.youtube.com/watch?v=k7m04xW0fzk}}
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**🎯 Watch first:** notice the panel scores against *agreed criteria*. Your job today is to decide those criteria — and defend them.
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---
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## The challenge
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acd0d1 lisa 2026-06-02 07:00:31
SD C04 Hot Cross Bun activity: anchor Step 1 to two real CHOICE-reviewed buns Replace the abstract 'two or three brands' framing in Step 1 with a real comparison: Woolworths Bakery Chocolate (CHOICE Expert 95) vs Coles Finest Luxurious Fruit (Expert 85), using CHOICE's March 2025 review data. Pedagogy: CHOICE's 95-vs-85 ranking is presented as one valid result from *one* matrix. A 'traditional Easter breakfast' persona pulls Coles into direct contention, demonstrating that 'different persona, different shape of decision — same data'. New 'Notes' column on the worked-example matrix shows where to use CHOICE data as input vs sanity check. Scoring sheet updated to the two named brands instead of A/B/C. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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We're comparing two real CHOICE-reviewed buns — **Woolworths Bakery Chocolate** vs **Coles Finest Luxurious Fruit**. Working as a review panel, you will:
9e5892 lisa 2026-06-02 06:54:36
SD C04 Hot Cross Bun activity: refocus on the 'which elements to develop further' C4-2 deliverable Drop the stress-test step (tangential to the new focus) and replace with a new Step 4 — Decide what to develop further. Teaches two sources for the develop-further list: (a) where the winner scored weakest in the matrix, and (b) requirements the matrix didn't score (worked example: packaging — out of the matrix because it doesn't change how the bun eats, but still required to 'attract customers to consider buying it'). Add CHOICE hot cross buns review-and-compare source link. Cross-link the new CHOICE Headphones — Spotting Efficiency and Effectiveness page. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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1. Design an evaluation matrix.
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2. Use it to crown a winner.
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3. **Decide which elements of the winning bun design need to be developed further** — including elements your matrix did *not* score.
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That third step is the headline skill for [C4-2](/sd/C04/C4-2%20Checkpoint%20-%20Evaluation%20Matrix). It's the harder one — and the one most students skip.
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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---
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acd0d1 lisa 2026-06-02 07:00:31
SD C04 Hot Cross Bun activity: anchor Step 1 to two real CHOICE-reviewed buns Replace the abstract 'two or three brands' framing in Step 1 with a real comparison: Woolworths Bakery Chocolate (CHOICE Expert 95) vs Coles Finest Luxurious Fruit (Expert 85), using CHOICE's March 2025 review data. Pedagogy: CHOICE's 95-vs-85 ranking is presented as one valid result from *one* matrix. A 'traditional Easter breakfast' persona pulls Coles into direct contention, demonstrating that 'different persona, different shape of decision — same data'. New 'Notes' column on the worked-example matrix shows where to use CHOICE data as input vs sanity check. Scoring sheet updated to the two named brands instead of A/B/C. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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## Step 1 — Pick a persona, then design the matrix *before you taste*
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We're not starting from scratch. CHOICE ran an actual review in March 2025 — a blind taste test of 19 supermarket and bakery buns. Two of their top picks are on the bench:
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625f76 lisa 2026-06-02 07:12:37
SD C04 Hot Cross Bun activity: add CHOICE product cards image (recreated) Embed a recreated CHOICE-style product-card image above the existing data table in Step 1. Same data, two channels: visual cards for recognition (students can match what they see on choice.com.au), table for scanning and screen readers. Real product photos and the four CHOICE data columns (Toasted, Fresh, Buns per pack, Price per bun) are visible at a glance, reinforcing the 'four columns, three criteria' lesson. PNG rendered from HTML (Chrome headless) and committed to the OtterWiki attachment folder. Source line now credits CHOICE for card layout, data and product photography. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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![Woolworths Bakery Chocolate Hot Cross Buns (Expert Rating 95) and Coles Finest Luxurious Fruit Hot Cross Buns (Expert Rating 85) — CHOICE product cards](Activity%20-%20Hot%20Cross%20Bun%20Matrix/choice-cards.png)
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acd0d1 lisa 2026-06-02 07:00:31
SD C04 Hot Cross Bun activity: anchor Step 1 to two real CHOICE-reviewed buns Replace the abstract 'two or three brands' framing in Step 1 with a real comparison: Woolworths Bakery Chocolate (CHOICE Expert 95) vs Coles Finest Luxurious Fruit (Expert 85), using CHOICE's March 2025 review data. Pedagogy: CHOICE's 95-vs-85 ranking is presented as one valid result from *one* matrix. A 'traditional Easter breakfast' persona pulls Coles into direct contention, demonstrating that 'different persona, different shape of decision — same data'. New 'Notes' column on the worked-example matrix shows where to use CHOICE data as input vs sanity check. Scoring sheet updated to the two named brands instead of A/B/C. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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| Product | CHOICE Rating | Type | Toasted | Fresh | Buns/pack | Price/bun |
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|---|---|---|---|---|---|---|
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| **Woolworths Bakery Chocolate** (Cadbury chips) | 95 | Chocolate | 97% | 93% | 6 | $0.73 |
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| **Coles Finest Luxurious Fruit** | 85 | Traditional | 83% | 87% | 4 | $1.38 |
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625f76 lisa 2026-06-02 07:12:37
SD C04 Hot Cross Bun activity: add CHOICE product cards image (recreated) Embed a recreated CHOICE-style product-card image above the existing data table in Step 1. Same data, two channels: visual cards for recognition (students can match what they see on choice.com.au), table for scanning and screen readers. Real product photos and the four CHOICE data columns (Toasted, Fresh, Buns per pack, Price per bun) are visible at a glance, reinforcing the 'four columns, three criteria' lesson. PNG rendered from HTML (Chrome headless) and committed to the OtterWiki attachment folder. Source line now credits CHOICE for card layout, data and product photography. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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*Source: [CHOICE Hot Cross Buns review and compare](https://www.choice.com.au/food-and-drink/bread-cereal-and-grains/bread/review-and-compare/hot-cross-buns), last updated 20 March 2025. Card layout, data and product photography reproduced from CHOICE for educational analysis.*
acd0d1 lisa 2026-06-02 07:00:31
SD C04 Hot Cross Bun activity: anchor Step 1 to two real CHOICE-reviewed buns Replace the abstract 'two or three brands' framing in Step 1 with a real comparison: Woolworths Bakery Chocolate (CHOICE Expert 95) vs Coles Finest Luxurious Fruit (Expert 85), using CHOICE's March 2025 review data. Pedagogy: CHOICE's 95-vs-85 ranking is presented as one valid result from *one* matrix. A 'traditional Easter breakfast' persona pulls Coles into direct contention, demonstrating that 'different persona, different shape of decision — same data'. New 'Notes' column on the worked-example matrix shows where to use CHOICE data as input vs sanity check. Scoring sheet updated to the two named brands instead of A/B/C. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Before you taste anything, notice what's already obvious: **these aren't the same product**. One is chocolate, one is traditional fruit. One is **$0.73 per bun**, the other **$1.38** — nearly double. CHOICE's Expert Rating crowns Woolies Chocolate (95) over Coles Fruit (85). But that ranking came out of *CHOICE's* matrix for *CHOICE's* view of "best hot cross bun" — and your persona is not CHOICE.
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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9e5892 lisa 2026-06-02 06:54:36
SD C04 Hot Cross Bun activity: refocus on the 'which elements to develop further' C4-2 deliverable Drop the stress-test step (tangential to the new focus) and replace with a new Step 4 — Decide what to develop further. Teaches two sources for the develop-further list: (a) where the winner scored weakest in the matrix, and (b) requirements the matrix didn't score (worked example: packaging — out of the matrix because it doesn't change how the bun eats, but still required to 'attract customers to consider buying it'). Add CHOICE hot cross buns review-and-compare source link. Cross-link the new CHOICE Headphones — Spotting Efficiency and Effectiveness page. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Criteria come **first**, never invented afterwards to crown the bun you happened to like. Working from the [seven design decisions](/sd/C04/Designing%20an%20Evaluation%20Matrix), agree on:
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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acd0d1 lisa 2026-06-02 07:00:31
SD C04 Hot Cross Bun activity: anchor Step 1 to two real CHOICE-reviewed buns Replace the abstract 'two or three brands' framing in Step 1 with a real comparison: Woolworths Bakery Chocolate (CHOICE Expert 95) vs Coles Finest Luxurious Fruit (Expert 85), using CHOICE's March 2025 review data. Pedagogy: CHOICE's 95-vs-85 ranking is presented as one valid result from *one* matrix. A 'traditional Easter breakfast' persona pulls Coles into direct contention, demonstrating that 'different persona, different shape of decision — same data'. New 'Notes' column on the worked-example matrix shows where to use CHOICE data as input vs sanity check. Scoring sheet updated to the two named brands instead of A/B/C. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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- **Who you're recommending for** — the persona drives everything. *"Best bun for a family's traditional Easter breakfast"* and *"best bun for the kids' lunchbox snack"* will not pick the same winner.
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- **Your criteria** — the handful that decide it for that person. Watch out: some criteria (like *"traditional fruit & spice flavour"*) really only apply to one of these two buns. Decide upfront whether you score that as 0–1 for the chocolate bun, or exclude it because your persona doesn't demand it.
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- **How each is measured** — blind panel rating for the eating qualities. The CHOICE data above is legitimate input for *value*, *price*, and a *sanity check* on toasted/fresh.
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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- **Weights, justified** — where your point of view lives.
9e5892 lisa 2026-06-02 06:54:36
SD C04 Hot Cross Bun activity: refocus on the 'which elements to develop further' C4-2 deliverable Drop the stress-test step (tangential to the new focus) and replace with a new Step 4 — Decide what to develop further. Teaches two sources for the develop-further list: (a) where the winner scored weakest in the matrix, and (b) requirements the matrix didn't score (worked example: packaging — out of the matrix because it doesn't change how the bun eats, but still required to 'attract customers to consider buying it'). Add CHOICE hot cross buns review-and-compare source link. Cross-link the new CHOICE Headphones — Spotting Efficiency and Effectiveness page. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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- **A scale** (use 0–5).
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- **What you deliberately exclude, and why** — *flag these now; they come back in Step 4.*
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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5ee2fe lisa 2026-06-02 07:08:12
SD C04 Hot Cross Bun activity: surface CHOICE's four data columns and flag 'buns per pack' as a non-criterion Lead the methodology callout with 'four columns of data — but only three are criteria' so the shape is unmistakable. Worked-example table now uses the four CHOICE columns as visible section headers, with student criteria slotted under each. The Fresh and Buns per pack sections appear explicitly as 'dropped — persona toasts' and 'not a criterion — never makes the matrix' — teaching what NOT to put in. Four-moves explainer replaces three-moves: adds the 'never used Buns per pack' negative case so the not-a-criterion lesson lands. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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**CHOICE's review surfaces four columns of data — but only three are criteria.**
558fe9 lisa 2026-06-02 07:04:11
SD C04 Hot Cross Bun activity: anchor Step 1 worked-example matrix to CHOICE methodology Each criterion now shows the CHOICE element it sits under (Flavour 50%, Appearance 20%, Aroma 15%, Texture 15%, Price per bun). New CHOICE methodology callout shows the source weights students are remixing. 'Three moves vs CHOICE' explainer makes the design decisions explicit: split Flavour into Flavour + Traditional, add Value, drop the Fresh score (persona toasts). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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5ee2fe lisa 2026-06-02 07:08:12
SD C04 Hot Cross Bun activity: surface CHOICE's four data columns and flag 'buns per pack' as a non-criterion Lead the methodology callout with 'four columns of data — but only three are criteria' so the shape is unmistakable. Worked-example table now uses the four CHOICE columns as visible section headers, with student criteria slotted under each. The Fresh and Buns per pack sections appear explicitly as 'dropped — persona toasts' and 'not a criterion — never makes the matrix' — teaching what NOT to put in. Four-moves explainer replaces three-moves: adds the 'never used Buns per pack' negative case so the not-a-criterion lesson lands. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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> 1. **Toasted score** — *Flavour* 50% · *Appearance* 20% · *Aroma* 15% · *Texture* 15%
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> 2. **Fresh (untoasted) score** — same four weights, scored untoasted
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> 3. **Price per bun** — pack price ÷ buns per pack
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> 4. ~~**Buns per pack**~~ — **not a criterion**. It's a fact that feeds *Price per bun*; it doesn't independently decide which bun is better.
558fe9 lisa 2026-06-02 07:04:11
SD C04 Hot Cross Bun activity: anchor Step 1 worked-example matrix to CHOICE methodology Each criterion now shows the CHOICE element it sits under (Flavour 50%, Appearance 20%, Aroma 15%, Texture 15%, Price per bun). New CHOICE methodology callout shows the source weights students are remixing. 'Three moves vs CHOICE' explainer makes the design decisions explicit: split Flavour into Flavour + Traditional, add Value, drop the Fresh score (persona toasts). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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> *Source: [CHOICE Hot Cross Buns review and compare](https://www.choice.com.au/food-and-drink/bread-cereal-and-grains/bread/review-and-compare/hot-cross-buns).*
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5ee2fe lisa 2026-06-02 07:08:12
SD C04 Hot Cross Bun activity: surface CHOICE's four data columns and flag 'buns per pack' as a non-criterion Lead the methodology callout with 'four columns of data — but only three are criteria' so the shape is unmistakable. Worked-example table now uses the four CHOICE columns as visible section headers, with student criteria slotted under each. The Fresh and Buns per pack sections appear explicitly as 'dropped — persona toasts' and 'not a criterion — never makes the matrix' — teaching what NOT to put in. Four-moves explainer replaces three-moves: adds the 'never used Buns per pack' negative case so the not-a-criterion lesson lands. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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CHOICE's matrix serves "the general hot-cross-bun shopper". *Your* persona is more specific — so you can split, drop or add criteria, but every row of *your* matrix should still trace back to one of CHOICE's three real criteria (or be a clearly-flagged new one).
558fe9 lisa 2026-06-02 07:04:11
SD C04 Hot Cross Bun activity: anchor Step 1 worked-example matrix to CHOICE methodology Each criterion now shows the CHOICE element it sits under (Flavour 50%, Appearance 20%, Aroma 15%, Texture 15%, Price per bun). New CHOICE methodology callout shows the source weights students are remixing. 'Three moves vs CHOICE' explainer makes the design decisions explicit: split Flavour into Flavour + Traditional, add Value, drop the Fresh score (persona toasts). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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acd0d1 lisa 2026-06-02 07:00:31
SD C04 Hot Cross Bun activity: anchor Step 1 to two real CHOICE-reviewed buns Replace the abstract 'two or three brands' framing in Step 1 with a real comparison: Woolworths Bakery Chocolate (CHOICE Expert 95) vs Coles Finest Luxurious Fruit (Expert 85), using CHOICE's March 2025 review data. Pedagogy: CHOICE's 95-vs-85 ranking is presented as one valid result from *one* matrix. A 'traditional Easter breakfast' persona pulls Coles into direct contention, demonstrating that 'different persona, different shape of decision — same data'. New 'Notes' column on the worked-example matrix shows where to use CHOICE data as input vs sanity check. Scoring sheet updated to the two named brands instead of A/B/C. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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A worked design for the persona *"a family buying for traditional Easter breakfast"*:
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5ee2fe lisa 2026-06-02 07:08:12
SD C04 Hot Cross Bun activity: surface CHOICE's four data columns and flag 'buns per pack' as a non-criterion Lead the methodology callout with 'four columns of data — but only three are criteria' so the shape is unmistakable. Worked-example table now uses the four CHOICE columns as visible section headers, with student criteria slotted under each. The Fresh and Buns per pack sections appear explicitly as 'dropped — persona toasts' and 'not a criterion — never makes the matrix' — teaching what NOT to put in. Four-moves explainer replaces three-moves: adds the 'never used Buns per pack' negative case so the not-a-criterion lesson lands. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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| Your criterion | Weight | Method (0–5) |
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|---|---|---|
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| **Under CHOICE *Toasted score* →** | | |
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| Flavour (toasted) | 30% | Blind panel rating — *Flavour* sub-element |
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| Traditional fruit & spice profile | 20% | Blind panel rating — your own sub-judgement; chocolate bun caps near 1 |
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| Texture (toasted) | 15% | Blind panel rating — *Texture* sub-element |
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| Aroma (toasted) | 10% | Blind panel rating — *Aroma* sub-element |
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| Appearance | 10% | Rating — *Appearance* sub-element |
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| **Under CHOICE *Price per bun* →** | | |
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| Value | 15% | Price → 0–5 (Woolies $0.73 ≈ 5/5; Coles $1.38 ≈ 2/5) |
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| **Under CHOICE *Fresh score* →** | | |
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| *(dropped — persona toasts)* | — | — |
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| **Under CHOICE *Buns per pack* →** | | |
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| *(not a criterion — never makes the matrix)* | — | — |
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Total weight: 100%. Four moves to notice:
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1. **Unpacked *Toasted score*.** CHOICE collapses Toasted into one number; we broke it into its four sub-elements (*Flavour*, *Texture*, *Aroma*, *Appearance*) so each earns its own weight — and added a *Traditional fruit & spice* sub-judgement the persona demands.
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2. **Kept *Price per bun* in, as *Value*.** CHOICE shows it but doesn't fold it into its Expert Rating. For a family buying for breakfast, $0.73 vs $1.38 matters.
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3. **Dropped *Fresh score*.** This persona toasts the buns; fresh appeal isn't the deciding factor.
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4. **Never used *Buns per pack*.** It isn't a criterion — it's already inside *Price per bun*. Don't let raw data columns sneak into your matrix as if they were criteria.
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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acd0d1 lisa 2026-06-02 07:00:31
SD C04 Hot Cross Bun activity: anchor Step 1 to two real CHOICE-reviewed buns Replace the abstract 'two or three brands' framing in Step 1 with a real comparison: Woolworths Bakery Chocolate (CHOICE Expert 95) vs Coles Finest Luxurious Fruit (Expert 85), using CHOICE's March 2025 review data. Pedagogy: CHOICE's 95-vs-85 ranking is presented as one valid result from *one* matrix. A 'traditional Easter breakfast' persona pulls Coles into direct contention, demonstrating that 'different persona, different shape of decision — same data'. New 'Notes' column on the worked-example matrix shows where to use CHOICE data as input vs sanity check. Scoring sheet updated to the two named brands instead of A/B/C. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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*Deliberately excluded:* packaging — it doesn't change how the bun eats, so it can't help one bun beat the other on this matrix. (Hold on to this — Step 4 picks it back up.)
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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558fe9 lisa 2026-06-02 07:04:11
SD C04 Hot Cross Bun activity: anchor Step 1 worked-example matrix to CHOICE methodology Each criterion now shows the CHOICE element it sits under (Flavour 50%, Appearance 20%, Aroma 15%, Texture 15%, Price per bun). New CHOICE methodology callout shows the source weights students are remixing. 'Three moves vs CHOICE' explainer makes the design decisions explicit: split Flavour into Flavour + Traditional, add Value, drop the Fresh score (persona toasts). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Look at what the persona just did. Weighting *traditional flavour* at 20% — *and* dropping CHOICE's fresh score, *and* pulling value into the rating — compresses CHOICE's 10-point lead (95 vs 85) into a contest the panel's own scores will decide. **Different persona, different shape of decision — same data.**
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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## Step 2 — Taste blind, score independently
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9e5892 lisa 2026-06-02 06:54:36
SD C04 Hot Cross Bun activity: refocus on the 'which elements to develop further' C4-2 deliverable Drop the stress-test step (tangential to the new focus) and replace with a new Step 4 — Decide what to develop further. Teaches two sources for the develop-further list: (a) where the winner scored weakest in the matrix, and (b) requirements the matrix didn't score (worked example: packaging — out of the matrix because it doesn't change how the bun eats, but still required to 'attract customers to consider buying it'). Add CHOICE hot cross buns review-and-compare source link. Cross-link the new CHOICE Headphones — Spotting Efficiency and Effectiveness page. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Two habits that are real evaluation skills, not just fairness:
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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9e5892 lisa 2026-06-02 06:54:36
SD C04 Hot Cross Bun activity: refocus on the 'which elements to develop further' C4-2 deliverable Drop the stress-test step (tangential to the new focus) and replace with a new Step 4 — Decide what to develop further. Teaches two sources for the develop-further list: (a) where the winner scored weakest in the matrix, and (b) requirements the matrix didn't score (worked example: packaging — out of the matrix because it doesn't change how the bun eats, but still required to 'attract customers to consider buying it'). Add CHOICE hot cross buns review-and-compare source link. Cross-link the new CHOICE Headphones — Spotting Efficiency and Effectiveness page. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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- **Blind it.** Label the brands A, B, C with the names hidden. If you can see the brand, the brand scores it for you.
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- **Score alone first, then compare.** If everyone just agrees with whoever speaks loudest, you've measured confidence, not buns.
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Apply your weights to each brand's scores to get a **weighted total**.
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9e5892 lisa 2026-06-02 06:54:36
SD C04 Hot Cross Bun activity: refocus on the 'which elements to develop further' C4-2 deliverable Drop the stress-test step (tangential to the new focus) and replace with a new Step 4 — Decide what to develop further. Teaches two sources for the develop-further list: (a) where the winner scored weakest in the matrix, and (b) requirements the matrix didn't score (worked example: packaging — out of the matrix because it doesn't change how the bun eats, but still required to 'attract customers to consider buying it'). Add CHOICE hot cross buns review-and-compare source link. Cross-link the new CHOICE Headphones — Spotting Efficiency and Effectiveness page. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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## Step 3 — Crown the winner
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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- **Explain** which bun proceeds, citing at least two criteria and their scores.
9e5892 lisa 2026-06-02 06:54:36
SD C04 Hot Cross Bun activity: refocus on the 'which elements to develop further' C4-2 deliverable Drop the stress-test step (tangential to the new focus) and replace with a new Step 4 — Decide what to develop further. Teaches two sources for the develop-further list: (a) where the winner scored weakest in the matrix, and (b) requirements the matrix didn't score (worked example: packaging — out of the matrix because it doesn't change how the bun eats, but still required to 'attract customers to consider buying it'). Add CHOICE hot cross buns review-and-compare source link. Cross-link the new CHOICE Headphones — Spotting Efficiency and Effectiveness page. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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- **Justify** by **naming the rival**: what does your winner give up compared with the runner-up, and why is that trade-off worth it for your persona?
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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9e5892 lisa 2026-06-02 06:54:36
SD C04 Hot Cross Bun activity: refocus on the 'which elements to develop further' C4-2 deliverable Drop the stress-test step (tangential to the new focus) and replace with a new Step 4 — Decide what to develop further. Teaches two sources for the develop-further list: (a) where the winner scored weakest in the matrix, and (b) requirements the matrix didn't score (worked example: packaging — out of the matrix because it doesn't change how the bun eats, but still required to 'attract customers to consider buying it'). Add CHOICE hot cross buns review-and-compare source link. Cross-link the new CHOICE Headphones — Spotting Efficiency and Effectiveness page. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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## Step 4 — Decide what to develop further
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You now know *which* bun wins. The harder question — **the C4-2 deliverable** — is: *which elements of that winning design need detailed design work next?*
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The matrix on its own doesn't answer that. Look in **two** places:
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**(a) Where your winner scored weakest.** If your winner beats the rivals overall but only got a 3 on *texture*, that is a development priority. The detailed-design task isn't "is the texture good enough?" — it's "*how* will we improve texture in the next version?"
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**(b) Requirements the matrix didn't score.** This is the bit students miss. The matrix scores criteria *the persona uses to choose between options* — taste, value, freshness. But your project has requirements that don't decide *one bun over another*, and so don't earn a matrix row, yet absolutely affect the final product. **Packaging** is the classic case:
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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9e5892 lisa 2026-06-02 06:54:36
SD C04 Hot Cross Bun activity: refocus on the 'which elements to develop further' C4-2 deliverable Drop the stress-test step (tangential to the new focus) and replace with a new Step 4 — Decide what to develop further. Teaches two sources for the develop-further list: (a) where the winner scored weakest in the matrix, and (b) requirements the matrix didn't score (worked example: packaging — out of the matrix because it doesn't change how the bun eats, but still required to 'attract customers to consider buying it'). Add CHOICE hot cross buns review-and-compare source link. Cross-link the new CHOICE Headphones — Spotting Efficiency and Effectiveness page. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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> The requirement *"attract more customers to consider buying it"* is real — but packaging doesn't change how the bun eats, so it stays out of the matrix. It still has to be designed properly. It belongs on your "develop further" list anyway.
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A quick test for any candidate element:
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> *"If two designs tied on this, would it show up in the matrix?"* If **no**, but it still has to be **designed properly**, it goes on your develop-further list.
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**Now produce three things to develop further** — at least one from **(a)**, at least one from **(b)**.
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> [!NOTE]
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> In C4-2 this is the headline output. The matrix names the winning *idea*; the deliverable is which **elements** of that idea become detailed designs. Packaging-not-in-matrix is your worked example of source (b).
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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## Your scoring sheet
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acd0d1 lisa 2026-06-02 07:00:31
SD C04 Hot Cross Bun activity: anchor Step 1 to two real CHOICE-reviewed buns Replace the abstract 'two or three brands' framing in Step 1 with a real comparison: Woolworths Bakery Chocolate (CHOICE Expert 95) vs Coles Finest Luxurious Fruit (Expert 85), using CHOICE's March 2025 review data. Pedagogy: CHOICE's 95-vs-85 ranking is presented as one valid result from *one* matrix. A 'traditional Easter breakfast' persona pulls Coles into direct contention, demonstrating that 'different persona, different shape of decision — same data'. New 'Notes' column on the worked-example matrix shows where to use CHOICE data as input vs sanity check. Scoring sheet updated to the two named brands instead of A/B/C. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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| Criterion (weight) | Method | Woolworths Bakery Chocolate | Coles Finest Luxurious Fruit |
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| **Weighted total / 5** | | | |
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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9e5892 lisa 2026-06-02 06:54:36
SD C04 Hot Cross Bun activity: refocus on the 'which elements to develop further' C4-2 deliverable Drop the stress-test step (tangential to the new focus) and replace with a new Step 4 — Decide what to develop further. Teaches two sources for the develop-further list: (a) where the winner scored weakest in the matrix, and (b) requirements the matrix didn't score (worked example: packaging — out of the matrix because it doesn't change how the bun eats, but still required to 'attract customers to consider buying it'). Add CHOICE hot cross buns review-and-compare source link. Cross-link the new CHOICE Headphones — Spotting Efficiency and Effectiveness page. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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**To develop further:**
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1. *(from (a) — a matrix-scored criterion the winner is weakest on)*
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2. *(from (b) — a requirement the matrix didn't score, e.g. packaging)*
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3. *(your call — either source)*
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e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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## Why this matters
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9e5892 lisa 2026-06-02 06:54:36
SD C04 Hot Cross Bun activity: refocus on the 'which elements to develop further' C4-2 deliverable Drop the stress-test step (tangential to the new focus) and replace with a new Step 4 — Decide what to develop further. Teaches two sources for the develop-further list: (a) where the winner scored weakest in the matrix, and (b) requirements the matrix didn't score (worked example: packaging — out of the matrix because it doesn't change how the bun eats, but still required to 'attract customers to consider buying it'). Add CHOICE hot cross buns review-and-compare source link. Cross-link the new CHOICE Headphones — Spotting Efficiency and Effectiveness page. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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The buns are a stand-in. The design decisions are **identical** when you evaluate your own software design ideas in [C4-2](/sd/C04/C4-2%20Checkpoint%20-%20Evaluation%20Matrix). The matrix tells you which idea proceeds; the develop-further list tells you what your detailed design has to *do*. Both come out of this one activity.
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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## See also
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- [Designing an Evaluation Matrix](/sd/C04/Designing%20an%20Evaluation%20Matrix) — the seven design decisions in full
9e5892 lisa 2026-06-02 06:54:36
SD C04 Hot Cross Bun activity: refocus on the 'which elements to develop further' C4-2 deliverable Drop the stress-test step (tangential to the new focus) and replace with a new Step 4 — Decide what to develop further. Teaches two sources for the develop-further list: (a) where the winner scored weakest in the matrix, and (b) requirements the matrix didn't score (worked example: packaging — out of the matrix because it doesn't change how the bun eats, but still required to 'attract customers to consider buying it'). Add CHOICE hot cross buns review-and-compare source link. Cross-link the new CHOICE Headphones — Spotting Efficiency and Effectiveness page. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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- [CHOICE Headphones — Spotting Efficiency and Effectiveness](/sd/C04/CHOICE%20Headphones%20-%20Spotting%20Efficiency%20and%20Effectiveness) — the same matrix discipline applied to a software-flavour example
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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- [C4-2 Checkpoint — Your Evaluation Matrix](/sd/C04/C4-2%20Checkpoint%20-%20Evaluation%20Matrix) · [Efficiency vs Effectiveness](/sd/C04/Efficiency%20vs%20Effectiveness)
9e5892 lisa 2026-06-02 06:54:36
SD C04 Hot Cross Bun activity: refocus on the 'which elements to develop further' C4-2 deliverable Drop the stress-test step (tangential to the new focus) and replace with a new Step 4 — Decide what to develop further. Teaches two sources for the develop-further list: (a) where the winner scored weakest in the matrix, and (b) requirements the matrix didn't score (worked example: packaging — out of the matrix because it doesn't change how the bun eats, but still required to 'attract customers to consider buying it'). Add CHOICE hot cross buns review-and-compare source link. Cross-link the new CHOICE Headphones — Spotting Efficiency and Effectiveness page. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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- Reference: [CHOICE hot cross buns review-and-compare](https://www.choice.com.au/food-and-drink/bread-cereal-and-grains/bread/review-and-compare/hot-cross-buns)
e71e64 lisa 2026-05-25 22:51:38
SD C04: add Hot Cross Bun Matrix activity page; link from design guide and C04-home Hands-on Use-Modify-Create activity: design + run + defend an evaluation matrix on 2-3 bun brands, with blind tasting, independent scoring, persona stress-test, a blank scoring template, and transfer to C4-2/U4 O1. Original example (not reproducing CHOICE's data); links the CHOICE bun video. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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