C02 Resources — Data Collection & Analytical Diagrams
Criterion scope: Data collection methods (interviews, observations, surveys, reports), user stories, analytical diagrams (context diagrams, data flow diagrams, use case diagrams), UML.
C2-1: Data Collection
Existing Materials (CriterionXX/)
Criterion02/ has user stories activities (including teacher toolbox), data collection guidance, and links to SRS and diagrams. Solid foundation.
External Resources
| Resource | Source | Format | VCAA Mapping | Why It's Useful |
|---|---|---|---|---|
| VCAA Assessment — Applied Computing | VCAA | Reading | Data collection — official requirements | The authority on what VCAA expects from data collection evidence. |
Gaps — C2-1
- Minimal. Data collection methods (interviews, surveys, observations, reports) are well-understood concepts. The existing materials and the VCAA guidance are sufficient.
- A short video showing a student conducting a data collection interview for their SAT would be useful as a model but is not critical.
C2-2: Analytical Diagrams
Existing Materials (CriterionXX/)
Criterion02/ has dedicated lessons for context diagrams, data flow diagrams, and use case diagrams, plus two quizzes. Good coverage.
External Resources
| Resource | Source | Format | VCAA Mapping | Why It's Useful |
|---|---|---|---|---|
| Ryan's Tutorials — Data Flow Diagrams | Ryan's Tutorials | Reading + visual diagrams | Context diagrams, data flow diagrams, processes, entities, data stores, data flows | Excellent free tutorial. Uses accessible language suitable for high school students. Covers DFD components, multi-level design, balancing, and 14 rules for valid DFD construction. Includes the 8-step creation methodology. |
| Lucidchart — UML Use Case Diagram Tutorial | Lucidchart | Reading + interactive tool | Use case diagrams: actors, use cases, associations, system boundary, include, extend | Well-structured tutorial with visual examples. Lucidchart can also be used as a free tool for students to draw their diagrams. |
| Lucidchart — How to Make a Data Flow Diagram | Lucidchart | Reading + interactive tool | Context diagrams, data flow diagrams — creation process | Step-by-step guide to creating DFDs, starting from context diagrams. Students can use Lucidchart's free tier to create their actual SAT diagrams. |
| Lucidchart — Data Flow Diagram Examples | Lucidchart | Reading + visual examples | DFD components, symbols, levels | Examples of DFDs at different levels with explanations of each symbol type. Good reference for students while creating their own. |
| GeeksforGeeks — Use Case Diagram | GeeksforGeeks | Reading + diagrams | Use case diagrams: actors, use cases, system boundary, relationships | Comprehensive reference with examples. Good for students who prefer text-based learning. |
| Creately — Use Case Diagram Tutorial | Creately | Reading + interactive tool | Use case diagrams — creation and relationships | Tutorial with an embedded diagram editor. Students can practice creating use case diagrams directly. |
| Visual Paradigm — Use Case Diagram Tutorial | Visual Paradigm | Reading + visual | Use case diagrams — comprehensive guide | Detailed beginner's guide covering all UML use case diagram elements. |
Gaps — C2-2
- No VCE-specific video walking through the creation of all three diagrams (context, DFD, use case) for a single software project. Generic UML tutorials exist but don't use VCE terminology or expectations.
- Hand-drawing practice — the SAT requires hand-drawn diagrams for validation, but all external resources focus on tool-based creation. Consider creating a resource on hand-drawing techniques for diagrams.
- Include and Extend relationships in use case diagrams — students consistently struggle with these. The Lucidchart tutorial covers them but a focused VCE example would help.
Recommended Actions
- Ryan's Tutorials DFD page is the standout external resource for C2-2. Assign as required reading for data flow diagrams.
- Lucidchart (free tier) is recommended as the tool for creating digital diagrams — it has templates for all three diagram types.
- Consider creating a video walkthrough of drawing all three diagrams for a sample project, showing common mistakes students make.