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ef4237 lisa 2026-04-25 22:18:29
Add C02 wiki content (DRAFT) — landing page, key-concept pages, Resources Builds out C02 (Data Collection & Analytical Diagrams). Adds C02-home, 3 new key-concept pages (DRAFT for teacher review tomorrow), external resource rows in C02-Resources.md, and a Hub link to C02-home. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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# C02 — Data Collection & Analytical Diagrams
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Hamilton College · Year 12 · 2026
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The second SAT checkpoint covers how you gather evidence about your client's needs and how you model the system you are about to build. You will collect data from real people, prepare it for analysis, and produce three analytical diagrams — all under timed, hand-drawn conditions.
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c6c6d5 lisa 2026-04-27 20:49:10
C02 home: add new pages (Essential Terms, Data Collection Methods, Context Diagram) Restructure into Start here / Data collection (C2-1) / Analytical diagrams (C2-2) groupings so students can find pages by validation.
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## Start here
ef4237 lisa 2026-04-25 22:18:29
Add C02 wiki content (DRAFT) — landing page, key-concept pages, Resources Builds out C02 (Data Collection & Analytical Diagrams). Adds C02-home, 3 new key-concept pages (DRAFT for teacher review tomorrow), external resource rows in C02-Resources.md, and a Hub link to C02-home. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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c6c6d5 lisa 2026-04-27 20:49:10
C02 home: add new pages (Essential Terms, Data Collection Methods, Context Diagram) Restructure into Start here / Data collection (C2-1) / Analytical diagrams (C2-2) groupings so students can find pages by validation.
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- [Essential Terms](/sd/C02/Essential%20Terms) — glossary of every C02 term (data collection, the three diagrams, qual/quant); click each term to expand its definition
ef4237 lisa 2026-04-25 22:18:29
Add C02 wiki content (DRAFT) — landing page, key-concept pages, Resources Builds out C02 (Data Collection & Analytical Diagrams). Adds C02-home, 3 new key-concept pages (DRAFT for teacher review tomorrow), external resource rows in C02-Resources.md, and a Hub link to C02-home. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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c6c6d5 lisa 2026-04-27 20:49:10
C02 home: add new pages (Essential Terms, Data Collection Methods, Context Diagram) Restructure into Start here / Data collection (C2-1) / Analytical diagrams (C2-2) groupings so students can find pages by validation.
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## Topics — Data collection (C2-1)
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- [Data Collection Methods](/sd/C02/Data%20Collection%20Methods) — the four methods (interview, survey, observation, report) — when to use each, strengths/weaknesses, recommended 3-method mix
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- [Explaining vs Describing Your Data Collection](/sd/C02/Explaining%20vs%20Describing%20Your%20Data%20Collection) — the exact rubric difference between 7–8 and 9–10 for Indicator 1; worked examples of each level
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## Topics — Analytical diagrams (C2-2)
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- [Context Diagram](/sd/C02/Context%20Diagram) — Yourdon-DeMarco notation, a worked example, "draw it / check it" steps, common mistakes
ef4237 lisa 2026-04-25 22:18:29
Add C02 wiki content (DRAFT) — landing page, key-concept pages, Resources Builds out C02 (Data Collection & Analytical Diagrams). Adds C02-home, 3 new key-concept pages (DRAFT for teacher review tomorrow), external resource rows in C02-Resources.md, and a Hub link to C02-home. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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- [Context Diagram vs Data Flow Diagram](/sd/C02/Context%20Diagram%20vs%20Data%20Flow%20Diagram) — what can appear on each diagram, side-by-side; the most common notation errors in C2-2
3b5c00 lisa 2026-04-28 17:35:38
Add C02 Use Case Diagram wiki page (5 PlantUML-rendered examples) Page covers actors, use cases, system boundary, and the four relationships (association, generalisation, include, extend), plus arrow-direction rules — the common UCD trap. Five focused PNGs pre-rendered from PlantUML and committed under sd/C02/Use Case Diagram/ (OtterWiki doesn't render PlantUML natively): - 01-base.png — simplest UCD (1 actor, 1 use case) - 02-multi-actor.png — Timetable system, 3 actors, 4 use cases - 03-generalisation.png — Administrator → Teacher → Student - 04-include.png — Edit User --«include»--> Load User - 05-extend.png — Display Help --«extend»--> Register User Blocks used: TIP intro, WARNING for arrow-direction trap, DANGER for common mistakes, SUCCESS for the draw-it order, INFO for the rubric stake. Four-question CYU with spoiler answers. Linked from C02-home under Analytical diagrams.
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- [Use Case Diagram (UCD)](/sd/C02/Use%20Case%20Diagram) — actors, use cases, system boundary, and the four relationships; arrow-direction rules for «include» / «extend»
ef4237 lisa 2026-04-25 22:18:29
Add C02 wiki content (DRAFT) — landing page, key-concept pages, Resources Builds out C02 (Data Collection & Analytical Diagrams). Adds C02-home, 3 new key-concept pages (DRAFT for teacher review tomorrow), external resource rows in C02-Resources.md, and a Hub link to C02-home. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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- [What Is an Entity?](/sd/C02/What%20Is%20an%20Entity) — why entities include external systems (APIs, email servers) as well as human users; how to find every entity from your user stories
764b19 lisa 2026-04-26 08:07:23
Source material C02-C05: 6 new DRAFT pages, verified external rows YouTube-first priority sourcing per CXX-WIKI-VIDEO-guide §7. All external resources verified rigorously (oEmbed for YouTube, browser DOM check via playwright-cli for Isaac CS); no curl-200-only links. New DRAFT wiki pages (6): - C02: Excalidraw Diagram Starters - C03: Analytical Tools Template Guide - C04: Efficiency vs Effectiveness; Evaluation Criteria and the SRS - C05: Annotated Mock-up in Excalidraw; Plan B Contingency Table Verified external rows added across CXX-Resources.md (MPT YouTube, NNgroup, VCAA Teaching and Learning, Isaac CS prog_cwk_evaluation_ocr, Ryan's Tutorials). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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- [Excalidraw Diagram Starters](/sd/C02/Excalidraw%20Diagram%20Starters) — pre-framed skeletons for all three C02 diagrams (context diagram, DFD, use case diagram) with shape keys and notation checks (DRAFT)
ef4237 lisa 2026-04-25 22:18:29
Add C02 wiki content (DRAFT) — landing page, key-concept pages, Resources Builds out C02 (Data Collection & Analytical Diagrams). Adds C02-home, 3 new key-concept pages (DRAFT for teacher review tomorrow), external resource rows in C02-Resources.md, and a Hub link to C02-home. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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## Resources
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- [C02 Resources](/sd/Resources/C02-Resources) — per-topic reading and videos, including external resources for use case diagrams, qualitative vs quantitative data, and «include» vs «extend»
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