Why You Keep Forgetting Formulas
If you've ever revised formulas, felt confident, then blanked in the exam — you're not alone. The problem isn't your memory. It's your method. Most students try to memorise formulas by reading them repeatedly. But your brain doesn't store information that way. Memory requires active engagement — you need to use the formulas, not just look at them.
Technique 1: Understand, Don't Memorise
The best way to remember a formula is to understand where it comes from. If you understand that the quadratic formula is derived by completing the square, you can reconstruct it even if you forget the exact form. Understanding creates deeper, more durable memories than rote memorisation.
Technique 2: Use Them Repeatedly
Every time you use a formula in a practice question, you strengthen the memory. After solving 20 problems using the chain rule, you won't need to consciously recall it — it becomes automatic. Practise with StudyVector to build this fluency.
Technique 3: Spaced Repetition
Review your formula sheet at increasing intervals: after 1 day, then 3 days, then a week, then two weeks. Each review session, cover the formulas and try to write them from memory. This leverages the spacing effect — one of the most powerful findings in memory research.
Technique 4: Group Related Formulas
Don't learn formulas in isolation. Group related ones together. For example, learn all the differentiation rules together (power rule, chain rule, product rule, quotient rule). Understanding how they relate to each other makes each one easier to remember.
Technique 5: Create Mnemonics for the Tricky Ones
For formulas that genuinely need memorising (like trig identities), create mnemonics or visual associations. SOH CAH TOA is a classic example. The sillier and more vivid the mnemonic, the better it sticks.
Which Formulas You Actually Need to Memorise
Good news: in A-Level Maths, you're given a formula booklet. You don't need to memorise everything. Focus on memorising: basic differentiation and integration rules, laws of indices, common trig values, and any formulas NOT in the booklet. Check your exam board's formula booklet to know exactly what's provided.
Practice Is the Best Memory Tool
The students who remember formulas best are the ones who use them the most. Start practising with StudyVector — every question reinforces the formulas you need.