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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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## Key concepts
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Short explainers for the concepts most commonly confused or under-done at each rubric band:
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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
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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
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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
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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