Study guide
Mistakes notebook: how to build one and review it until you get it right
A mistakes notebook is a list of the questions you got wrong, with the reason for each one. It only works if the mistakes come back: redo each question without notes, days later, until you get it right with confidence.
What a mistakes notebook is
It is a record of the questions, cards or statements you got wrong while studying, with the right answer and why you missed it. It can be a paper notebook, a spreadsheet or an app.
The point is not to collect mistakes but to bring each one back until you get it right. A notebook you fill in and never reopen is just another pile of notes.
How to build yours, on paper or in a spreadsheet
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Write down the question and the right answer
Copy the question, or just the part that matters, the option you chose and the correct one. Add the subject and topic so you can find it later.
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Write why you missed it
Missing content, rushed reading, two similar concepts mixed up or running out of time? One line is enough. It tells you whether to study the topic again or read more carefully.
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Sum up the rule in one sentence
Something you can answer without looking, such as “aerobic respiration: mitochondrion; photosynthesis: chloroplast”. If it doesn't fit on one line, the topic needs a bigger review.
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Redo it without notes, days later
Cover the answer and try again. Wrong again? The question stays in the notebook and comes back sooner.
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Remove it only when you get it right with confidence
Getting it right once, right after reading the answer, doesn't count. Wait until you get it right on more than one pass, a few days apart.
A sample entry
An illustrative biology question with five options.
Question
Which organelle carries out aerobic cellular respiration? I chose “Chloroplast”; the answer is “Mitochondrion”.
Reason
I mixed up two organelles linked to energy: the chloroplast does photosynthesis, the mitochondrion does respiration.
Rule in one sentence
Aerobic respiration: mitochondrion. Photosynthesis: chloroplast.
Next attempts
Redo it in a few days and again the following week. It leaves the notebook after getting both right.
Why it works
No study tests the mistakes notebook itself. It combines two practices with good evidence: answering from memory and spacing reviews over time.
Roediger and Karpicke (2006) found that testing yourself helped later retention more than rereading. [R] Cepeda and colleagues (2006) reviewed studies in which spreading practice over time helped people remember more. [C] Dunlosky and colleagues (2013) rated practice testing and distributed practice as highly useful. [D]
Writing down why you missed a question is a practical suggestion: it helps you decide whether to go back to the content or just read the question more carefully.
Common mistakes when keeping a mistakes notebook
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Copying the whole solution
It takes time and turns into rereading. Write the minimum you need to redo the question, plus the one-sentence rule.
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Reviewing by reading only
Rereading the answer feels like knowing it. Cover the answer and try again.
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Never reopening it
Set a fixed time each week to redo your mistakes, or use a tool that brings each one back.
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Only logging the hard questions
Careless mistakes count too: if it happened once, it can happen on exam day.
How Supernapse does it for you
In the app, the mistakes notebook builds itself from what you miss in your sessions.
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Mistakes come back in Daily Study
What you got wrong comes back sooner, marked “You missed it before”, until you get it right. You don't have to remember to reopen anything.
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Understand it on the spot
Missed a question? Tap “Understand my mistake” and the tutor opens without leaving the session. It explains from your material and names the section it used.
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Review today's mistakes
At the end of the session, “Review my mistakes” goes over what you missed today, one at a time.
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Open the Mistakes notebook
Recent mistakes are grouped by subject and topic, with your answer and the right answer. What you miss several times is marked “Recurring mistake”.
What the app doesn't do for you
The Supernapse mistakes notebook only records what you miss in the app: flashcards, questions and true-or-false items made from your material. Mistakes from tests and question sets done elsewhere aren't added on their own.
The app doesn't classify the type of mistake either. If you want to know whether it was missing content or rushed reading, write it down yourself; the tutor helps you understand the content.
Frequently asked questions
Paper or digital mistakes notebook?
Both work as long as the mistakes come back. On paper, you decide when to redo them. In an app like Supernapse, what you got wrong comes back on its own in Daily Study.
Do I need to log every question I miss?
Log every question you got wrong or guessed right. Questions you answered with confidence can stay out.
When can I take a question out of the notebook?
When you get it right without notes on more than one attempt, a few days apart. Getting it right just after reading the answer doesn't show it stuck yet.
Does Supernapse record mistakes from tests I took outside the app?
No. Only mistakes from your sessions in the app are recorded. To work on a topic you missed elsewhere, upload your material on it: the questions made from it then count.
Does the app tell me why I got it wrong?
It doesn't classify the type of mistake. In “Understand my mistake” or “Understand with the tutor”, the tutor explains the answer from your material and names the section it used.
Sources and limits of the evidence
Published by the Supernapse team. References support the research claims marked in the text; the logging method and the example are practical suggestions, not validated protocols or tests of the app's effectiveness.
Let your mistakes come back at the right time
Download Supernapse, pick your exam and upload a PDF: on a new account, you answer a question made from it before subscribing. To open the kit, subscribe or start your 7-day free trial on the App Store or Google Play.
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