📖 ReadingGrade 4Lesson 19
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Distinguish Fact vs Opinion

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Learning Objectives

  • 1Distinguish between facts and opinions in a text
  • 2Identify opinion signal words such as "I think" and "should"
  • 3Rewrite an opinion sentence as a verifiable fact
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Mini Lesson

A fact is a statement that can be proved or disproved by evidence. An opinion is a personal belief or judgment that cannot be proven true for everyone. Being able to tell the difference is a key reading skill — especially when reading news articles, persuasive texts, and online content.

Clues That Help You Decide

  • Fact clues: numbers, dates, names, research findings — things you can check and verify.
  • Opinion clues: I think, I believe, should, must, the best, the worst, in my opinion, it seems.
  • Some opinions sound like facts — watch out for strong adjectives like "amazing" or "terrible."

Turning an Opinion into a Fact

  1. Find the opinion words (e.g., "best", "should", "I think").
  2. Ask: "Can this be measured or verified?"
  3. Replace the opinion word with measurable evidence.
  4. Example: "Dogs are the best pets" becomes "Dogs are the most popular pet in the UK, with 13 million owned."
Fact vs Opinion comparison chartTwo columns showing the characteristics of facts on the left and opinions on the right.Fact vs OpinionFACTOPINIONCan be provedCannot be provedUses numbers/datesUses "I think/should"VerifiablePersonal judgmentStays the sameVaries person to person
Opinion signal words listList of common opinion signal words arranged in a grid.Opinion Signal WordsI thinkI believeI feelshouldmustought tothe bestthe worstamazingterriblein my viewit seems
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A statement can contain both fact and opinion. "Climate change is real (fact) and it is the most frightening problem of our time (opinion)" mixes both. Identify each part separately.

Vocabulary
Fact
A statement that can be proved or disproved with evidencee.g. "The Eiffel Tower is 330 meters tall" is a fact.
Opinion
A personal belief or judgment that may not be true for everyonee.g. "The Eiffel Tower is the most beautiful building in the world" is an opinion.
Signal word
A word that hints that a statement is an opinione.g. "I think", "should", "the best", "I believe" are signal words.
Verifiable
Able to be checked or confirmed with evidencee.g. Population statistics are verifiable — you can look them up.
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← Lesson 18: Analyze Charts and GraphsLesson 20: Evaluate Online Sources →