Subject Guide
Computer Science
Logic + clarity. Most marks come from showing steps and explaining algorithms cleanly.
Scoring-7 rule: Trace carefully + name the concept + explain why.
Core Topics to Master
Algorithms
- Trace step-by-step
- Big-O basics
- Correct pseudocode
Data Structures
- Arrays vs lists
- Stacks/queues
- Trees basics
Systems
- Memory + CPU basics
- Networking concepts
- Databases basics
How to Study (Weekly)
- 3x/week: past paper questions
- 1x/week: timed pseudocode set
- Daily: trace 1 algorithm manually
- Error log: incorrect traces / missing explanation
Common Mark Traps
- Skipping trace steps
- Vague explanations
- Confusing terms (array/list)
- No justification for complexity
Quick Checklist
- Did I trace every step?
- Did I name the concept correctly?
- Did I justify my answer?
- Did I use correct pseudocode wording?