Review Your Mistakes
Every wrong answer from Battle Mode and Practice Mode is saved here automatically. Review them, understand what went wrong, and turn errors into lasting knowledge.
What is the Mistakes Review?
Whenever you answer a question incorrectly — whether battling monsters in a zone or drilling problems in Practice Mode — the question, your wrong answer, and the correct answer are recorded automatically. This page collects all of them in one place so you can go back and study each one.
Making mistakes is not a failure — it is the most efficient signal your brain receives about what it has not yet learned. Every bug a programmer encounters teaches them something the documentation did not. In the same way, every math error you review here converts a gap in knowledge into a concrete, fixable problem.
How to Use This Page
Filter your mistakes
Use the filters to narrow down by date (today, this week, this month), zone, topic, or operation type. Focusing on a single topic at a time — for example, all fraction errors — is far more effective than reviewing a random mix.
Study each error carefully
For each card, look at the question, your wrong answer, and the correct answer. Ask yourself: did you misread the problem, use the wrong operation, or make an arithmetic slip? Diagnosing the type of error is the first step to preventing it — the same root-cause analysis used in software debugging.
Go back to the lesson
If you see the same type of error appearing repeatedly — for example, mixing up multiplication and division of fractions — that is a signal to revisit the theory. Head to Math Lessons and read the relevant section before practising again.
Clear mistakes you have mastered
Once you can solve a problem type confidently and quickly, delete those cards to keep your review list focused. A shorter, current list of unresolved errors is more useful than a long archive of already-fixed ones.
Why Error Review Is the Fastest Way to Improve
The science of learning
Cognitive science calls this error-driven learning. When your prediction is wrong and you receive corrective feedback, your brain encodes the correct answer more deeply than if you had simply read it. Spaced repetition of past errors is the technique behind every effective flashcard system.
Patterns reveal weak spots
If 80% of your mistakes come from one topic — say, negative number arithmetic or order of operations — that single topic is your highest-leverage target. Fixing it improves your overall accuracy more than spreading effort evenly. Data-driven improvement is how engineers optimise systems and how athletes train.
Math builds on itself
An unfixed gap in fractions will slow you down in algebra. A shaky grasp of algebra will make calculus painful. Clearing errors early prevents them from compounding — the same reason software teams fix bugs in each sprint rather than letting technical debt accumulate across releases.
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