A well-explained Mathematics solution can make a difficult problem look simple. That is one purpose of good teaching. But understanding a solution while someone else performs the decisions is not the same as generating those decisions independently.
Solutions remove uncertainty
Once the method is visible, each step can feel inevitable. Before the solution appeared, however, the learner had to recognise the structure, choose a representation and select a method. Those hidden decisions are central to problem solving.
Pause before the next step
When studying a worked solution, cover the next line and predict it. Explain why that step is justified and what alternative might have been considered. This converts observation into partial generation.
Close the example
After understanding the method, remove the solution and reconstruct it from the beginning. If the student cannot do so, the example was understood with support but has not yet become independently accessible.
Change the surface
Use a fresh problem with changed numbers, wording or representation. Better still, mix it with questions requiring different methods. Now the learner has to recognise when the demonstrated idea is relevant.
Analyse wrong starts
If the student chooses the wrong method, ask which feature triggered the choice and which structural clue was missed. Showing the correct solution again may not repair method selection.
Use solutions as feedback
Worked answers are most powerful after a genuine attempt. The comparison between the student’s route and the model exposes the exact decision that needs repair.
The repair
Watch to understand, pause to predict, close to reconstruct, vary to transfer and mix to train selection. Mathematics improves when students move from seeing someone else’s reasoning to producing their own.
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