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Chapter 15: The Four Critical Questions

Summary

Meet the four critical-thinking questions and learn the basic vocabulary of evidence, claims, reasons, and inferences.

This chapter is part of the Grade 5 Digital Citizenship learning progression. After completing it, students will be able to use the vocabulary, recognize the situations, and apply the habits introduced in the concepts listed below.

Concepts Covered

This chapter covers the following 18 concepts from the learning graph, listed in dependency order:

  1. Claim
  2. Critical Thinking
  3. Curious Mind
  4. Jumping To Conclusion
  5. Asking Questions
  6. How They Know
  7. What Evidence
  8. What Is Missing
  9. Who Said It
  10. Confirming Sources
  11. Evidence
  12. Reason
  13. Logical Reason
  14. Premise
  15. Conclusion
  16. Inference
  17. Generalization
  18. Anecdote Vs Evidence

Prerequisites

This chapter builds on concepts from:

Owen and the Lunchroom Rumor

It is Tuesday. Owen is in line for lunch when Maya leans over and whispers, "Did you hear? They're getting rid of recess next year. My brother said his teacher told him."

Owen's stomach drops. No recess? He loves recess. He almost runs off to tell everyone he knows. Then he stops. Wait. Maya's brother told her? Did the brother actually hear it from his teacher, or did he hear it from another kid? And which teacher? When? About which year?

Owen has just done the most important thing a thinker can do. He has paused — not because the rumor is wrong, but because he is not sure yet whether it is right.

This chapter is about that pause and what to do during it. We'll learn the four big questions every great thinker uses, and the words for the parts of an argument. By the end, you will be a noticeably harder kid to fool.

Hi Friends!

Maka the River Otter waving welcome Hi friends, it's Maka. This is the chapter where you become a thinker — not just a reader, not just a fact checker, but a real critical thinker. Don't worry, the words sound fancier than they are. Pause, think, act!

Critical Thinking and the Curious Mind

Before we get to the questions, let's name the bigger habit they are part of.

Critical thinking is the habit of stopping to look carefully at a claim, an argument, or a story before you decide whether to believe it. Critical thinking is not the same as being grumpy or always saying no. It is being fair — fair to the truth, and fair to yourself. A critical thinker doesn't just believe things, and doesn't just refuse to believe things either. They check.

The fuel for critical thinking has its own name.

Curious mind is the part of you that wants to ask questions, find out more, and understand how things really work. Curious-minded kids are great at critical thinking because they enjoy the questions. They aren't trying to win arguments — they are trying to understand.

The opposite of critical thinking is something we all do sometimes.

Jumping to conclusion is when you decide what is true after only one piece of information, before you have stopped to check or ask. Owen almost jumped to a conclusion about recess from one whispered rumor. Smart thinkers catch themselves jumping, then back up and ask questions instead.

The way you back up is by asking questions.

Asking questions is the habit of saying "wait, how do you know?" or "what's the evidence?" or "who said this?" before accepting a claim. Asking questions is not rude when you do it kindly. It is one of the most powerful, most polite, most respectful things a thinker can do.

The Four Critical Questions

Here is the most important thing in this whole chapter. Real thinkers use a tiny set of questions over and over. The same four questions work on rumors, on news stories, on schoolyard claims, on advertisements, and on big arguments. Memorize them and you will be set for life.

Question Why it matters
1. Who said it? Tells you whose voice is making the claim
2. How do they know? Tells you whether the claim is based on real information
3. What is the evidence? Tells you whether the claim has anything to back it up
4. What is missing? Tells you what part of the story you are not hearing

Let's look at each one.

Who said it is the first question. It asks for the name and the role of the person making the claim. Was it a scientist? A teacher? A friend? A stranger online with no name? A grown-up has more weight on a science topic than a kid. A scientist has more weight than a grown-up who has never studied that science. The answer to "who said it" doesn't decide everything, but it is the right place to start.

How they know is the second question. It asks where the speaker got their information. "I read it in our school's newsletter" is one answer. "My brother heard from his teacher" is another. "I just have a feeling" is another. Each answer carries a different weight. The question is not rude — it is curious.

What evidence is the third question. It asks for the actual proof — the photos, the data, the quotes from real people, the studies, the official documents. Evidence is what turns a story into a fact. A claim with no evidence is not necessarily wrong, but it is not yet trustworthy.

What is missing is the fourth question — and it is the secret weapon. Most stories leave something out. Sometimes on purpose, sometimes by accident. The "what is missing" question makes you imagine the other parts of the story you have not heard. Is there another side? Is there a date that wasn't given? Is there a name that wasn't named? Is there context that would change how you feel? Asking "what is missing" can crack open a misleading claim like an egg.

There is one extra step that often follows the four questions.

Confirming sources is the work of finding more than one trusted source that says the same thing about a claim. It is just like the source comparison and lateral reading habits from Chapter 14. If you ask the four questions and you still aren't sure, the next move is almost always to look for confirming sources.

The Vocabulary of Arguments

The four questions are tools. They get even sharper when you know the names for the parts of any argument.

A claim is a statement that says something is true. "It will rain tomorrow" is a claim. "Pizza is the best food" is a claim. "The school is getting rid of recess" is a claim. Every story, every news article, every rumor, and every ad makes one or more claims. Critical thinkers learn to spot the claim first, before they go check it.

Evidence is a fact, a piece of data, a photo, a quote, or a measurement that supports or weakens a claim. Evidence is what the third critical question is asking for. Evidence is not just words. It is something a person can point to and say "see, here it is."

A reason is a sentence that tries to explain why a claim is true. Reasons connect a claim to its evidence. "Recess is getting cut because the school needs more time for testing" is a reason. Reasons can be strong or weak.

A strong reason has its own name.

Logical reason is a reason that actually makes sense — one where, if you accept the parts, the conclusion really does follow. "All dogs need water. Buster is a dog. So Buster needs water." That is a logical reason. The pieces fit together. By contrast, "Some dogs are brown. Buster is brown. So Buster is a dog" is not logical, because lots of things besides dogs are brown.

The pieces that go into a logical argument have their own names too.

A premise is a starting point — something a thinker is asking you to accept as true at the beginning of an argument. "All dogs need water" is a premise. "Buster is a dog" is a premise.

A conclusion is the claim at the end of an argument that the speaker says follows from the premises. "Buster needs water" is the conclusion.

The leap from premises to conclusion has its own name.

Inference is the step a thinker makes when they say "since these things are true, this other thing must also be true." Going from "all dogs need water" plus "Buster is a dog" to "Buster needs water" is an inference. Inferences are how thinkers actually use their brain. The four critical questions help you check whether an inference is fair or sloppy.

A Big Idea

Maka the River Otter thinking Every story online has the same parts: a claim, some reasons, some premises, and a conclusion. Once you can see those parts, the story stops being magic and starts being a puzzle you can solve. Pause, think, act!

Two Sneaky Mistakes

There are two specific thinking mistakes that happen so often online that they deserve their own names.

Generalization is when somebody takes a small example and stretches it into a big rule. "I met one mean kid from another school, so all the kids at that school are mean" is a generalization. The mistake is in the all. One kid does not equal all kids. Most generalizations have words like all, every, always, or never in them. Whenever you spot one of those words, slow down and ask whether the small example really proves the big rule.

The other big mistake is one of the most common in the whole digital world.

Anecdote vs evidence is the difference between one person's story (an anecdote) and a real pile of evidence from many people, careful tests, or real measurements. An anecdote is "my cousin swears this trick worked for him." Evidence is "ten studies of 1,000 kids each show this trick works for most of them." Anecdotes are not worthless — they can be interesting and they can give you ideas. But one anecdote does not prove a claim, no matter how strongly the storyteller believes it.

The cure for both generalization and anecdote-as-evidence is the same: the four critical questions, especially what is the evidence? and what is missing?

MicroSim: The Critical Question Coach

Critical Question Coach — interactive p5.js MicroSim

Type: microsim sim-id: critical-question-coach
Library: p5.js
Status: Specified

Learning objective (Bloom: Apply): Given a pretend claim, the student walks through the four critical questions, identifies the claim, the evidence, and what is missing, and decides whether the claim is strong, weak, or needs more checking.

Visual elements:

  • A responsive canvas (default 720 × 500, resizes with container width via updateCanvasSize() called first in setup()).
  • A claim card at the top showing one pretend claim ("Our school is getting rid of recess next year," "All kids who eat carrots get straight A's," "A new study shows kids should sleep 14 hours a night").
  • Four question buttons in a row: Who said it?, How do they know?, What evidence?, What is missing?
  • A workspace area below where each question's information appears as the student clicks it.
  • A verdict panel at the bottom: Looks strong, Looks weak, Needs more checking.
  • A small generalization warning that lights up when the claim contains all, every, always, or never.

Controls (built-in p5.js controls per project rules, placed at the bottom of the canvas):

  • createButton('Next claim') to load the next pretend claim from a bank of fifteen.
  • createButton('Reset') to clear the workspace.
  • createSelect() to filter the bank by claim type: Rumor, News, Ad, Stat, Big-rule generalization.

Behavior:

  • The student must click all four question buttons before the verdict panel becomes active.
  • Each question reveals one fact, baked in for that claim.
  • Soft green-check or kind try-again feedback after the verdict.
  • All claims are platform-agnostic — no real news brands or websites.

Implementation notes:

  • File location: docs/sims/critical-question-coach/ with main.html, main.js, and index.md.
  • main.html uses a plain <main></main> tag with no id attribute, so teachers can copy main.js directly into the p5.js editor.
  • In setup(), call updateCanvasSize() first, then canvas.parent(document.querySelector('main')).
  • Embedded into the chapter via an iframe in the chapter page once the sim files are built. The actual sim files are not part of this chapter task — only the spec lives here.

Implementation: p5.js sketch deployed at docs/sims/critical-question-coach/.

Owen Asks the Four Questions

Back in line for lunch, Owen turns to Maya and says — kindly, with curiosity, not with sass — "Wait, can I ask a few questions about that?"

Who said it? Maya's brother. (One step removed.) How does he know? He says his teacher said it. (Two steps removed.) What evidence? Maya doesn't know. There is no school newsletter, no email from the principal, no announcement. What is missing? The teacher's actual name. The year. The actual quote. Whether the brother heard it himself or got it from another kid.

Owen does not say "that's not true" — because he doesn't know yet. He says, "Cool. I'm going to ask Mr. Adams after lunch, just to be sure before I tell anyone." Mr. Adams smiles when Owen asks, and tells him there is no plan to get rid of recess. The rumor was a misunderstanding — somebody had heard a teacher mention shorter recess on rainy days, and it grew with each retelling.

Owen feels great. He didn't yell at Maya. He didn't spread the rumor. He just asked the questions. That is the whole job of a critical thinker.

If a rumor is about something serious — somebody being hurt, somebody being unsafe, an emergency — go straight to a trusted adult instead of trying to fact-check it yourself. Trusted adults can find the truth fast and act on it. You will not be in trouble for telling.

Quick Recap

Here are the 18 new words you just learned in this chapter.

  1. Claim — a statement that says something is true
  2. Critical thinking — looking carefully at claims before believing
  3. Curious mind — the part of you that wants to ask questions
  4. Jumping to conclusion — deciding too fast, before checking
  5. Asking questions — the habit of "wait, how do you know?"
  6. How they know — the second critical question
  7. What evidence — the third critical question
  8. What is missing — the fourth critical question
  9. Who said it — the first critical question
  10. Confirming sources — finding more than one good source that agrees
  11. Evidence — facts and data that support or weaken a claim
  12. Reason — a sentence explaining why a claim is true
  13. Logical reason — a reason where the pieces actually fit
  14. Premise — a starting point of an argument
  15. Conclusion — the claim at the end of an argument
  16. Inference — the step from premises to a conclusion
  17. Generalization — stretching a small example into a big rule
  18. Anecdote vs evidence — one story vs many tested facts

High-Five, Friends!

Maka the River Otter celebrating Look at you — 18 new thinker words! The four critical questions are now in your toolbox forever: Who? How? Evidence? What's missing? I'll see you in Chapter 16, where we'll learn about healthy doubt, open minds, and how to change your mind when the evidence changes. Until then — high-five!

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