Student protocols / Learning · Advanced · 10 min
The Interleaving Method
Mix related topics inside one session to build discrimination and transfer.
What it is
Interleaving means mixing different types of problems in one session, instead of doing twenty of the same kind in a row. You have to work out which method each question needs, as in a real exam.
Why it works
A meta-analysis of 59 studies found a moderate overall benefit of interleaving (Hedges' g = 0.42) and a small one for maths tasks (g = 0.34). It was not a win everywhere: for learning words, studying one type at a time did better, and for expository texts the results were unclear (Brunmair & Richter, 2019).
Who it is for
Students of maths, physics, chemistry, statistics, economics or accounting, where the hard part of the exam is recognising which method a question needs.
Step-by-step implementation
- Learn each method on its own first, until you can do a basic example.
- Then build mixed sets: problems from three or four chapters, shuffled.
- Before solving, write down which method the problem needs and why.
- Mark your answers and note every time you picked the wrong method.
- Keep vocabulary and word lists blocked: one list at a time.
Practical example
Instead of 15 integration-by-parts problems in a row, you do 15 shuffled problems from integration by parts, substitution and partial fractions, naming the method before you start each one.
Recommended routine
- Problem-solving subjects: one mixed set per session after the basics are in place.
- Two weeks out: past papers, which are mixed by design.
- Languages: block vocabulary, mix only grammar exercises.
Key takeaways
- Mixing helps most when the hard part is choosing the method.
- It's slower and feels harder. That's expected.
- Not for word lists: block those.
Sources
Go deeper: The Exam Week Kit · €12,95