Protocol
Try the problem before you study the method
A short attempt can prepare the question that instruction needs to answer.
Before you use it
- Use when
- You need conceptual understanding or transfer and are about to read the method before forming any model yourself.
- Avoid when
- Evidence is concentrated in education, especially mathematics and physics; a 2025 biology study found opposite near-transfer effects across cohorts and no far-transfer advantage. Teach first for safety-critical procedures, missing prerequisites or unmanaged overload.
An idea to explore.
Try this idea.
Inspect the example, try the idea in your situation, then check your next move.
Why it matters
For a safe learning task, make a bounded attempt before reading the canonical method. Build one plausible solution path, note where it breaks, then study the explanation and compare it with your attempt. A 53-study meta-analysis favored problem-solving before instruction on average, but results vary. The sequence is attempt, instruction, comparison and retry—not unguided struggle.
Steps
- Check that basic prerequisites are present and a wrong attempt is harmless.
- Spend a short fixed period building one or two plausible approaches.
- Study the explanation and compare its key moves with your attempt.
- Retry a nearby case unaided; teach first if the attempt was mostly random or overloaded.
An example
Before a database-normalization tutorial, sketch how you would split one small table. Study the rules, mark where your model differed, then normalize a second table unaided.
Check your result
You can name one flaw in your first model and solve a nearby case without copying the worked example.
Keep this limit in mind
- Evidence is concentrated in education, especially mathematics and physics; a 2025 biology study found opposite near-transfer effects across cohorts and no far-transfer advantage. Teach first for safety-critical procedures, missing prerequisites or unmanaged overload.
My learning
Read. Recall. Repeat.
Save this idea and return to it on any device.
Connected ideas
Useful withMake difficulty earn its keepUse before
Explain the rule before you reuse the example
Evidence and sources (4)
A 2026 review concludes that testing, spacing, interleaving and productive-failure approaches can function as desirable difficulties, while warning that greater perceived difficulty or disfluency should not itself be treated as evidence of better learning.
The review synthesizes multiple literatures and does not provide one scalar difficulty target for individual learners or tasks.
A 2024 review argues that the effect of added difficulty depends on material complexity and learner expertise: difficulty can aid retrieval-based learning but excess extraneous load can hinder schema formation.
The proposed integrated model is theoretical and should be used as a design boundary, not a validated personalization algorithm.
A meta-analysis of 53 studies and 166 comparisons found a moderate average advantage for problem solving before instruction over instruction before problem solving on conceptual knowledge and transfer (Hedges' g=0.36, 95% CI 0.20 to 0.51), with stronger estimates when productive-failure design principles were implemented with higher fidelity.
The literature was concentrated in mathematics and physics, moderator results show the sequence is not universally superior, and the review does not justify unguided discovery without a subsequent instruction phase.
When Problem Solving Followed by Instruction Works: Evidence for Productive Failure · Abstract and implications
Two 2025 classroom experiments using the same biochemistry materials found opposite near-transfer advantages across student populations: problem-solving-first performed better in introductory biology students, while instruction-first performed better in biochemistry students; neither experiment found a significant far-transfer difference.
The effects were small and limited to near transfer, the samples came from one domain, and the authors state that the reversal cannot be attributed to prior knowledge alone.
Does Instruction-First or Problem-Solving-First Depend on Learners’ Prior Knowledge? · Experiments 1-2 results and General Discussion
All sources (4)
- Why Desirable Difficulties 'Work': A Review of the Evidence From Cognitive and Educational Psychology and Some Caveats for the Health Professions Education Field
- Does difficulty moderate learning? A comparative analysis of the desirable difficulties framework and cognitive load theory
- When Problem Solving Followed by Instruction Works: Evidence for Productive Failure
- Does Instruction-First or Problem-Solving-First Depend on Learners’ Prior Knowledge?
Edition and review
Version 0.2.0 · Published
No review details are supplied for this edition.