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Reading a chapter twice with a highlighter feels like studying. The pages look familiar, the colours look organised, and you close the book feeling ready. The research says that feeling is often wrong, and that a few changes to how you read can turn the same 40 minutes into far more learning.
Why don't rereading and highlighting work well?
In his *American Educator* summary of a large review of study techniques, John Dunlosky reports that in a survey at one university, 84 percent of students studied by rereading. Yet rereading has inconsistent effects, and any benefit over a single reading may not last. Highlighting, compared with simply reading, failed to help many kinds of learners, and in one study students who highlighted did worse on questions that required connecting ideas.
The trap is familiarity. Bjork, Dunlosky and Kornell's review explains that people often misjudge their own learning based on how fluent the material feels. Our post on why rereading feels like learning goes into this.
Step 1: Preview and ask questions first
Before reading, skim the headings, figures and end-of-chapter exercises, then write three questions you expect the chapter to answer. Try answering them, even if you guess.
Wrong guesses still help. Richland, Kornell and Kao found that students who were asked questions before reading a passage learned those concepts better than students given extra reading time, even for questions they had got wrong on the pretest.
Step 2: Ask why as you read
Read one section at a time. At each key statement, stop and ask why it is true. Smith, Holliday and Austin gave 294 college students a challenging passage from their own course textbook, with a simple why-question about every 150 words. They understood the science better than students who reread, even after accounting for prior knowledge and verbal ability.
Mark anything you can't answer with a small question mark in the margin. Those are your gaps.
Step 3: Close the book and recall
At the end of each section, close the book and say or write everything you remember. Then reopen it and check.
McDaniel, Howard and Einstein tested exactly this read-recite-review routine. It improved recall compared with rereading and with note-taking, both immediately and a week later. With longer engineering passages, it beat rereading on multiple-choice and problem-solving questions and matched note-taking while taking less study time.
It works for the same reason self-testing works. In Roediger and Karpicke's experiments, students who were tested on a passage remembered more after two days and a week than students who restudied it.
Step 4: Summarise from memory
At the end of the chapter, write a five-line summary without looking. Then compare it with the chapter's own summary and fix what you missed.
A 40-minute plan for an NCERT chapter section
NCERT textbooks are free to read on the NCERT website. Take one section of the Class 11 physics chapter on laws of motion, such as the part on common forces, which covers friction.
Preview (5 minutes). Skim headings, figures and exercises. Write three questions, such as: "Why is static friction a range, not one value?"
Read with why-questions (15 minutes). One subsection at a time. Pause at each key statement.
Recite (10 minutes). Book closed. Write what you remember for each subsection, then check.
Summarise (5 minutes). Five lines from memory.
Test (5 minutes). Try two in-text exercises without looking back.
If a question mark from step 2 won't go away, the Fermi Concept Library has a lesson for every concept in physics, chemistry, biology and mathematics, so you can fill that gap before moving on. For NEET students, our guide to studying NCERT for NEET applies this to biology.
Use the plan on your next chapter and compare the step 5 result with how a reread usually leaves you.
