How to make flashcards from a textbook chapter

A step-by-step way to turn a textbook chapter into short question-and-answer cards, what deserves a card, and what research says about making them.

By Bleart Emini, founder · Published October 26, 2026 · Last reviewed October 26, 2026 · 6 min read

A textbook chapter holds far more than you will be asked about. Making cards from every sentence takes hours and leaves you with a deck too big to review. The useful skill is deciding what deserves a card and how to phrase it. This article gives a process you can follow chapter by chapter, shows it on a short example, and says what the research does and does not support.

Step 1: survey before you make anything

Spend five minutes on the chapter's structure before you read closely. Look at the title, the learning objectives or opening questions if there are any, the headings, the bold terms, the figures, and the end-of-chapter questions or summary.

This does two jobs. It shows you what the author thinks matters, and it tells you how many cards a chapter is likely to need. The end-of-chapter questions are especially useful, because they are written to test the chapter. Each one is a candidate card or a candidate practice problem.

Step 2: read one section at a time

Read a single section, one heading's worth, and stop. Do not make cards while you are reading it for the first time. Reading and card-making compete for attention, and you will end up copying whatever you read last.

After the section, ask what a student would need to be able to do with it: define a term, explain a cause, tell two things apart, work a type of problem, label a diagram. Those are your cards.

Step 3: write one question per idea

Keep each card small. Piotr Wozniak's "minimum information principle", from his essay "Twenty rules of formulating knowledge", says each item should be as simple as possible, so one repetition retrieves only a small piece of information.
Ask a question, not a topic. "What does the S phase of the cell cycle do?" beats "S phase".
Use cloze cards for definitions. A sentence with a gap, such as "DNA is copied during the ____ phase", is quick to write and easy to keep small. Wozniak recommends cloze deletion as a way to get started.
Use contrast cards for easy-to-confuse pairs. "How does mitosis differ from meiosis in the number of cell divisions?" forces you to separate them.
Make practice cards from worked problems. For math and science, a card that gives a problem and asks for the setup or the answer tests the skill, not only the vocabulary.
Use pictures for diagrams. Hide the labels on a figure and name them. The guide on memorizing with images covers this.
Skip what you will not be asked. Anecdotes, historical asides and sentences you already know cold do not need cards.

A worked example

This is an example of the method, not a record of anyone's study. Suppose a biology chapter has a section on the cell cycle that says: "Interphase includes G1, S and G2. DNA is replicated during S phase. Mitosis follows, and its stages are prophase, metaphase, anaphase and telophase."

A single card with that whole paragraph would be useless. Split it:

Q: What are the three parts of interphase, in order? A: G1, S, G2.
Q: DNA is copied during the ____ phase. A: S (the synthesis phase of interphase).
Q: Name the four stages of mitosis in order. A: Prophase, metaphase, anaphase, telophase.
Q: Does DNA replication happen before or during mitosis? A: Before, in S phase of interphase.

The last card is there because it tests a link between two facts, which a plain list does not. The chapter's end-of-chapter questions would then add one or two application cards.

Step 4: check the cards before you trust them

Read each card as if you had not seen the chapter. Is the question clear? Is there one answer? Could you answer it by pattern alone, because the question contains the answer? Fix vague cards and delete trivia now, while the chapter is open next to you. A card with an error in it is worse than no card, because you will drill the error.

Step 5: review on a schedule, not once

A deck you made on Sunday and read once is just a summary. The benefit comes from answering the cards from memory, more than once, with gaps. See how spaced repetition works for why the gaps matter.

What the research says (and how strong it is)

Practice testing is well supported. Dunlosky and colleagues (2013) reviewed ten common study techniques. According to the Association for Psychological Science summary, practice testing and distributed practice received the highest utility ratings, and highlighting, underlining, summarization and rereading were rated low. Flashcards are one way to do practice testing, but the review is about the technique, not about flashcards as a product.

Retrieval beat concept mapping. Karpicke and Blunt (2011) compared retrieval practice with building concept maps from a science text. Retrieval practice produced more learning, including on inference questions. That supports answering questions about a chapter over diagramming it.

Producing answers helps. Bertsch, Pesta, Wiscott and McDaniel (2007) pooled 445 effect sizes from 86 studies of the generation effect, the finding that people remember what they produce themselves better than what they read. The average effect was 0.40. Their abstract describes tasks such as generating synonyms, so most of this work is on short items.

What is not shown. No study found for this article isolates whether writing your own cards from a chapter teaches more than receiving ready-made cards. Writing cards makes you process the chapter, which probably has value, but that is a reasonable inference, not a measured result. Most of the studies above also use undergraduates, short passages and delays of days to a week.

Mistakes to avoid

Copying the chapter. If a card is a sentence from the book with a word removed and nothing more, you are rereading with extra steps.
Cards that list. A card with seven items hides which one you do not know.
No questions about applications. A deck of definitions can feel complete and still leave you stuck on a problem.
Making the deck and never opening it. The review is the studying.

Key takeaways

Survey the chapter first, read one section at a time, then write cards after reading.
One idea per card, a question instead of a topic, and a short answer you can say in a sentence.
Use cloze, contrast and practice-problem cards, and add picture cards for diagrams.
Check each card for clarity and errors while the chapter is still open.
The strongest evidence is for answering from memory, repeatedly and spaced out. The evidence for making the cards yourself is weaker.

Sources

Wozniak, P. (1999). Twenty rules of formulating knowledge. SuperMemo. https://www.supermemo.com/en/blog/twenty-rules-of-formulating-knowledge
Dunlosky, J., Rawson, K. A., Marsh, E. J., Nathan, M. J., and Willingham, D. T. (2013). Improving students' learning with effective learning techniques. Psychological Science in the Public Interest, 14(1), 4-58. https://doi.org/10.1177/1529100612453266 (abstract read via Crossref; summary read at https://www.psychologicalscience.org/news/releases/which-study-strategies-make-the-grade.html)
Karpicke, J. D., and Blunt, J. R. (2011). Retrieval practice produces more learning than elaborative studying with concept mapping. Science, 331, 772-775. https://doi.org/10.1126/science.1199327 (abstract read via Europe PMC, PMID 21252317)
Bertsch, S., Pesta, B. J., Wiscott, R., and McDaniel, M. A. (2007). The generation effect: a meta-analytic review. Memory and Cognition, 35(2), 201-210. https://doi.org/10.3758/bf03193441 (abstract read via Europe PMC, PMID 17645161)

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