Why this works
See the thinking, not only the answer.
Most quizzes stop at right or wrong. Catch the Flaw shows where a child’s thinking changed direction, helps repair it, and checks the idea on a fresh question.
One simple learning loop
The child always knows what happens now and what comes next.
- 1
Find the first mistake
- 2
Explain why it is wrong
- 3
Check and repair it
- 4
Try a new question
What this reveals about learning
Each part answers a question that an ordinary quiz leaves open.
- 1
No lucky guesses
A correct answer cannot hide confused thinking
The child finds the first broken step and chooses the reason it fails.
- 2
Mistakes become useful
The child repairs the idea, not only the answer
A guided check makes the mistake visible before the child fixes it.
- 3
Learning gets checked
A fresh question shows whether the idea works again
The lesson ends with a new problem and records how independently it was solved.
The evidence, made readable
Four studies support the learning loop
Each study backs a different part of the experience: comparing mistakes, explaining thinking, using guidance, and trying again.
Decimal learning with Grades 4 and 5
Comparing a correct example with a common mistake helped.
Learners built stronger understanding and showed fewer misconceptions than learners who compared two correct examples.
Open the studyFraction division
Explaining the examples mattered.
Self-explanation improved conceptual learning. Simply looking at two examples did not produce the same result.
Open the studyProblem-solving feedback
Guided prompts improved the next similar attempt.
Structured feedback supported better explanations, error correction, and performance on similar new problems.
Open the studyWorked examples in probability
Beginners need support while studying mistakes.
Flawed examples helped stronger learners more. That is why every repair in Catch the Flaw includes guidance.
Open the study
Ready to catch one?
Choose a subject or try the short demo first.