Algebra looks large but feels ‘random’
In Advanced, ‘Algebra’ is not one chapter — it is five different skills (matrices, complex numbers, probability, P&C, relations/sets). If you revise them as random tricks, mocks feel lucky/unlucky. For 300, Algebra must feel like a bank: you know which tool to pull in under 2 minutes.
How to fix it
In Advanced, ‘Algebra’ is not one chapter — it is five different skills (matrices, complex numbers, probability, P&C, relations/sets). If you revise them as random tricks, mocks feel lucky/unlucky. For 300, Algebra must feel like a bank: you know which tool to pull in under 2 minutes.
How it looks in the paper
- A matrix power / sum ∑Mᵏ numerical or multi-correct
- Complex arg/modulus or roots-of-unity matching
- Bayes or independence multi-correct with two boxes/events
- Counting with constraints (stars-and-bars + upper limits)
Symptom
Mocks: strong on easy SC, collapse on matrices/probability/complex MC or counting numericals.
Root cause
Algebra is a bucket (matrices, complex, probability, P&C, relations) practised as isolated tricks, not as convertible mark banks.