Repeated practice on one question type can create speed and accuracy. That is useful during early skill development. The problem appears when success depends on knowing in advance what kind of question is coming.
Blocked practice supplies the category
If twenty questions in a row all require the same method, the worksheet has already made one of the most important decisions. The learner does not need to determine which method fits; only to execute the method repeatedly.
Examinations remove that support
Mixed assessments require discrimination. Students must recognise whether two similar-looking questions actually require different approaches and whether two different-looking questions share the same underlying structure.
Fluency still matters
The solution is not to eliminate repeated practice. Learners often need a period of concentrated repetition to stabilise a new procedure. But once execution becomes reliable, practice should change jobs.
Introduce competing possibilities
Mix several recently learned methods. Ask the learner to name the relevant structure before solving. Include questions where the tempting familiar method should not be used. Require justification of the choice.
Change surface features
Alter wording, diagrams, numbers, contexts and representations while preserving the underlying principle. Then preserve the surface while changing the principle. These contrasts teach students which features matter and which are distractions.
Transfer beyond Mathematics
The same trap appears in Science when students answer only one familiar application, in comprehension when questions are practised by predictable templates and in grammar when an exercise announces the target rule. Real performance requires selecting knowledge before applying it.
The repair
Use repeated questions to establish fluency, then move into mixed, varied and delayed practice. Train the student to diagnose before executing. Problem solving begins where the worksheet stops telling the learner what kind of problem it is.
