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Praxis Core · Reading (5713)

Praxis Core: Key Ideas and Details Concepts

Importance ★★★★★ · 35% (estimate)

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Overview

This chapter is about understanding what a passage actually says. You will find the main idea, pick out the details that support it, and decide what the passage suggests without saying it directly. It is one of the largest parts of the Reading test, so steady practice here pays off.

Start with the main idea. It is the one point the whole passage is built around, so it should cover every paragraph, not just one example. Next come supporting details, which are the facts, examples, and reasons the author uses to back up that main point.

Inference questions ask what the author implies or what the passage suggests. A good inference is a small, safe step from the words on the page. If an answer needs your own opinion or outside knowledge to work, it is probably a trap.

Key concepts

  • Main idea

    The central point of the whole passage. Every paragraph should connect back to it. It is broader than any single example but not so broad that it goes beyond the passage.

    Memory tipAsk: "Could this be the title?" If it only fits one paragraph, it is a detail.

  • Supporting detail

    A fact, example, statistic, or reason that helps prove or explain the main idea. Details answer questions like who, what, when, where, and why.

    Memory tipDetails hold up the main idea like legs hold up a table.

  • Inference

    A conclusion the reader draws from clues in the text. The passage does not say it directly, but the words clearly point to it.

    Memory tipText clues + careful thinking = inference. No clue in the text, no inference.

  • Too broad / too narrow answers

    Wrong main-idea choices often cover much more than the passage discusses (too broad) or only one detail from it (too narrow).

    Memory tipPick the answer that fits the passage like a well-sized coat.

  • Paraphrase in answer choices

    Correct answers usually restate the passage in new words. Choices that copy exact phrases but change the meaning are common traps.

    Memory tipSame meaning, different words is good. Same words, different meaning is a trap.

Often tested

  • The main idea covers the whole passage, not just one detail.
  • An inference must be supported by the text, not by outside opinions or knowledge.
  • Watch for questions that ask what the author implies or what the passage suggests.
  • Reject answer choices that are true in real life but not stated or supported in the passage.

3 sample questions

Verified practice questions from this unit.

Practice questionReviewedReading (5713) › Key Ideas and Details★★★★★

Question 1. Honeybees that find a good patch of flowers return to the hive and perform a movement called the waggle dance. The direction of the dance on the honeycomb tells other bees which way to fly in relation to the sun, and the length of the waggle run signals how far away the flowers are. By following these cues, other workers can find food they have never seen. The dance allows a colony to send its foragers quickly to the richest sources nearby. Which statement best expresses the main idea of the passage?

  1. ① Honeybees use the waggle dance to share where food can be found.
  2. ② The length of a waggle run shows how sweet the flowers are.
  3. ③ Honeybees can only find flowers that are close to the hive.
  4. ④ Honeybees always fly straight toward the sun when they leave the hive.
  5. ⑤ Young worker bees learn to dance by watching older bees for weeks.
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Answer: ① Honeybees use the waggle dance to share where food can be found.

Key point: The main idea covers the whole passage, not one detail.

Every sentence in the passage explains how the waggle dance tells other bees the direction and distance of food. A main idea must cover the whole passage, and this choice does.

Wrong choices

  • "The length of a waggle run shows how sweet the flowers are.": The passage says the length shows how far away the flowers are, not how sweet they are.
  • "Honeybees can only find flowers that are close to the hive.": The passage never limits bees to nearby flowers; the dance tells them the distance.
  • "Honeybees always fly straight toward the sun when they leave the hive.": The dance gives a direction in relation to the sun; it does not say bees always fly toward it.
  • "Young worker bees learn to dance by watching older bees for weeks.": The passage says nothing about how bees learn the dance.
Practice questionReviewedReading (5713) › Key Ideas and Details★★★★★

Question 2. Last spring, residents of Maple Street turned an empty lot into a community garden. Each family received a small plot, and a shared tool shed was built near the gate. By August, neighbors who had never spoken before were trading tomatoes and recipes over the fence. Several families have already asked whether more plots can be added next year. Which conclusion is best supported by the passage?

  1. ① The garden will close next year because it has run out of space.
  2. ② Most residents did not want the garden at first.
  3. ③ The tool shed was the most popular part of the garden.
  4. ④ The garden produced more food than any other garden in the city.
  5. ⑤ The garden has helped neighbors get to know one another.
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Answer: ⑤ The garden has helped neighbors get to know one another.

Key point: A good inference is supported by clues in the text.

Neighbors "who had never spoken before" began trading tomatoes and recipes. This supports the conclusion that the garden brought neighbors together.

Wrong choices

  • "The garden will close next year because it has run out of space.": Families asked to add plots; nothing says the garden will close.
  • "Most residents did not want the garden at first.": The passage never describes residents opposing the garden.
  • "The tool shed was the most popular part of the garden.": The shed is mentioned only once, with no sign that it was the most popular part.
  • "The garden produced more food than any other garden in the city.": The passage makes no comparison with other gardens in the city.
Practice questionReviewedReading (5713) › Key Ideas and Details★★★★★

Question 3. Researchers who study memory have found that sleep does more than rest the body. During deep sleep, the brain appears to replay and strengthen information learned during the day. In several experiments, people who slept after learning a list of words remembered more of them the next day than people who stayed awake for the same number of hours. These findings suggest that a good night's sleep is an important part of learning. The passage is mainly about

  1. ① how to fall asleep faster before a test
  2. ② why people need more sleep as they get older
  3. ③ why some people dream about lists of words
  4. ④ how sleep helps people remember what they learn
  5. ⑤ how the body repairs its muscles during sleep
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Answer: ④ how sleep helps people remember what they learn

Key point: Ask what the passage as a whole is about.

From the first sentence to the last, the passage explains that sleep strengthens what people learned. The final sentence states the point directly: sleep is an important part of learning.

Wrong choices

  • "how to fall asleep faster before a test": The passage does not give advice on falling asleep.
  • "why people need more sleep as they get older": Age is never mentioned in the passage.
  • "why some people dream about lists of words": The passage mentions remembering word lists, not dreaming about them.
  • "how the body repairs its muscles during sleep": The passage is about the brain and memory, not muscles.
Practice 5 questions from this unit →