Study Only on this device
Mistake notebook
Keep the lesson from a wrong answer. Then give yourself another try.
Free, always. No account needed.
Opening your local material…
A small tool. A useful practice.
Record where the question came from, one sentence on why you got it wrong, and the correction. In retry mode, try again before revealing the correction and your explanation.
Sources & limits
Research reviewed by Metcalfe describes benefits of errors followed by corrective feedback, including reflection on the reasoning behind a mistake. Logging is not practice: use retry mode to attempt the question again.
Metcalfe, J. (2017). Learning from Errors. Annual Review of Psychology, 68, 465–489.A few things to know
Is keeping a mistake log enough?
Logging is not practice. Try the question again with the correction hidden, then check your reasoning against a trusted answer. This notebook cannot verify that your correction is accurate.
Is everything here free?
Yes. Create, practise, import, export and print without an account or payment.
Where is my material saved?
In this browser on this device. It is not uploaded or synced. Export JSON regularly, especially before clearing browser data or changing devices. Anyone using this browser profile may be able to read it.
Can I move my work to another device?
Export a JSON backup, transfer the file yourself, then import it on the other device. Check the preview before replacing that browser’s saved material.
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