When you get a practice question wrong, the useful thing to do isn't to reread the section it came from. It's to figure out what kind of mistake you just made, because a careless slip, a real gap in your understanding, and mixing up two similar ideas all need a completely different fix. Treating every wrong answer the same way, as a page you need to reread, wastes the most specific feedback you get while studying.
Why rereading the section doesn't fix the actual problem
Rereading feels productive because the material is right there and familiar. But a wrong answer is a symptom, not the disease. If you misread the question under time pressure, rereading the textbook chapter does nothing about that. If you confused two concepts that sound alike, rereading the chapter that covers one of them won't stop you from mixing them up again. The section you got wrong is rarely the fix for why you got it wrong.
Sort each mistake into one of four categories
Before you fix anything, name what happened. Most wrong answers fall into one of four buckets:
- Slip: you knew this, but rushed, misread the question, or made an arithmetic or typing error under pressure.
- Gap: you never learned this part in the first place, or learned it too shallowly to apply it.
- Mix-up: you confused this with a similar but different concept, term, or rule.
- Guess: you had no real basis for your answer and picked something that seemed plausible.
Each one points to a different fix. A slip usually means slowing down on that type of question, not relearning the topic. A gap means you genuinely need to study that material, ideally from a different angle than the one that left the gap in the first place. A mix-up means you need a side-by-side comparison of the two things you're confusing, not more exposure to either one alone. A guess means you need to go back to basics on that specific piece, since there's nothing partial to build on yet.
Keep a running mistake log
This doesn't need an app or a system. A plain document or a stack of index cards works fine. For each mistake worth logging, write down four things: what the question was testing, which of the four categories it falls into, what specifically went wrong, and one concrete line about what you'll do differently. "Reread chapter 4" isn't specific enough to count. "I keep confusing mitosis and meiosis when a question mentions chromosome number, write out the difference in one sentence and check it before answering" is.
You don't need to log every wrong answer. Slips from a rushed moment usually aren't worth writing down individually, though a pattern of slips on one question type is. Gaps and mix-ups are almost always worth a line, since they tend to reappear until you deal with them directly.
Check the log before you start studying, not just after a test
Most people only look at their mistakes right after a practice test or quiz, then never open that page again. The log earns its keep when you glance at it before your next session on the same subject: a thirty-second scan of recent entries, especially mix-ups and gaps, resets your attention on exactly the spots most likely to trip you up again. It turns a study session from "cover the material" into "cover the material and specifically watch for the two things that got me last time."
Revisit the same mistake twice, not just once
One correction rarely sticks the first time, especially for a mix-up. A useful rhythm is to revisit a logged mistake once at your very next session on that subject, and again roughly a week later once it's had time to fade a little. If you still catch yourself making the same mix-up on the second pass, that's a sign the fix you wrote down the first time wasn't specific enough, not that you're bad at the material. Rewrite the fix with more detail and check it again at your next session.
None of this replaces studying the material itself. But a mistake log turns the parts you already got wrong once, the most specific feedback available to you, into the parts you're least likely to get wrong twice.