Study
Mistake notebook
Keep the lesson from wrong answer. Then give yourself another try.
Free forever. No account needed.

Dey open your local material…
Small tool. Useful practice.
Write where the question come from, one sentence about why you get am wrong, and the correction. For retry mode, try again before you show the correction and your explanation.
Sources & limits
Research wey Metcalfe review talk about benefits of mistakes wey corrective feedback follow, including thinking about the reasoning behind a mistake. Logging no be practice: use retry mode to try the question again.
Metcalfe, J. (2017). Learning from Errors. Annual Review of Psychology, 68, 465–489.Some things to know
E enough make I dey write down my mistakes?
To write am down no be practice. Try the question again with the correction hide, then check how you reason am against answer wey you trust. This notebook no fit confirm say your correction correct.
Everything here free?
Yes. Create, practise, import, export and print without account or payment.
I fit move my work go another device?
Export JSON backup, transfer the file by yourself, then import am for the other device. Check the preview before you replace the material wey browser save.