Case 15 of 20 · Evidence & Research

Puzzlebeginner⭐ 30 XP🔍 Detective Academy

Statistical Thinking

🔎Case Brief #15

👫 You and your friend disagree about something.

🎯 Your mission

Solve the puzzle.

⚡ The twist

Trust the evidence, not the feeling.

What You'll Learn

🧠 '9 out of 10 dentists recommend this toothpaste. ' But how many dentists were asked? 10? 1,000? Sample size matters! Learn to question statistics. Here's how to do it: 1. Look carefully at the problem. What do you see? 2. Think about what you already know. Does this remind you of something? 3. Try an answer! It's totally okay to be wrong — that's how we learn. 4. Check: did it work? If not, try something else! You're building your thinking muscles. The more you practice, the stronger they get!

Key Concept: Understanding percentages and samples

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Think About This

👫 You and your friend disagree about something. How can understanding percentages and samples help you figure out who's right — or if you're BOTH a little right?

Thinking Steps

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👀 What Do I See?

Look at the problem about understanding percentages and samples. What do you notice?

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🤔 What Do I Know?

What do you already know that could help? Have you seen something like this before?

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💡 What's My Idea?

Think of an answer. Can you think of a second one too?

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⭐ What Did I Learn?

Check your answer. Was it right? What did you figure out? Tell someone!

Key Points

Master understanding percentages and samples

Apply evidence & research in real situations

Build habits of evidence & research

Key Vocabulary

Clue

Something that helps solve a mystery

Proof

Something that shows an idea is right

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Why This Matters in Real Life

People use evidence research skills at home, at school, and at work. Every time you practice, you're getting ready for the future!

Talk About It

Discuss these questions with a friend, parent, or classmate.

1Can you explain understanding percentages and samples to a friend using your own words?
2What was the most interesting thing you learned today?
3Draw a picture of what you learned and show it to someone!

Solve the Case

Case 1

1 of 3

What is the main idea of understanding percentages and samples?

How sure are you going to be?😐 maybe

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Stretch Challenge

Try this in real life this week.

Ask: how does this person know what they're saying?

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For the dinner table

“How do you know when to trust what someone tells you?”

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Next Smart Case

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