Case File: Research & Fact-checking
Great researchers do not just collect answers. They test them. Learn to ask strong research questions, judge your sources and check what Claude tells you.
Your case plan
Chapter 5 at a glance
5.1 Start with a strong question
🎯 Goal: turn a big topic into questions you can research- A topic like “Space” is too big. A question like “How do rockets leave Earth?” gives direction.
- Split your big question into 3 or 4 small questions you can answer one by one.
- Ask Claude for keywords and where to look (books, official sites), not for “the answer”.
- Write down what you find, with where it came from.
🌳 One big question, many small ones
🌍 Real-life examples
Too big and no direction.
Focused, and you do the research.
📝 Quick quiz
1. Why split a big question into small ones?
✅ Small questions are easier to research and answer.
2. What should you ask Claude for first?A) The final answer B) Questions and keywords
✅ B. Then you do the research.
3. What should you write down while researching?
✅ What you found, and where it came from.
5.2 Know your sources
🎯 Goal: tell strong sources from weak ones- A source is where information originally comes from: a book, a report, an official website.
- Not every source is equally trustworthy. Ask: Who wrote it? When? Why?
- Claude is a guide, not a source. It helps you find and understand, but it can be wrong.
- Important facts should be checked in at least 2 reliable sources.
🪜 The source ladder
🕵️ The 3 source questions
🌍 Real-life examples
Claude is not a source.
Two reliable sources agree.
📝 Quick quiz
1. Which is a strong source?
✅ A textbook, an encyclopedia or an official website.
2. Is Claude a source?A) Yes B) No, it is a guide
✅ B. Verify its facts in real sources.
3. What are the 3 source questions?
✅ Who wrote it? When? Why?
5.3 Fact-check Claude
🎯 Goal: catch wrong or made-up details before you use them- Claude can sound very sure and still be wrong. It can even make up facts, quotes and web links.
- Ask Claude “What should I double-check in your answer?” and “How sure are you?”
- If your app can search the web, ask for sources, then open them yourself. Links may not work or may not say what Claude claims.
- Check important facts in 2 reliable sources before using them.
🚩 Red flags in an answer
🔄 The Fact-check Loop
🌍 Real-life examples
One wrong fact can spoil it.
Accurate and trustworthy.
📝 Quick quiz
1. Name two red flags.
✅ Any two of: super-exact numbers, unsourced quotes, links or books you cannot find, “studies show” with no source.
2. How many reliable sources should confirm an important fact?A) 0 B) At least 2
✅ B. At least two.
3. What should you ask Claude after an answer?
✅ “What should I double-check?” and “How sure are you?”
5.4 Cite and credit
🎯 Goal: show where your facts came from, in your own words- Citing means telling readers where a fact came from. It makes your work trustworthy.
- Keep a source list while you research, not at the end!
- Write facts in your own words. If you copy exact words, use quotation marks and name the source.
- Copying without credit is plagiarism. Credit always, even for pictures and ideas.
🗂️ A simple source card
🌍 Real-life examples
Claude might invent sources that do not exist.
Only real sources, tidy format.
📝 Quick quiz
1. What does citing mean?
✅ Telling readers where a fact came from.
2. Should you ask Claude to invent sources for you?A) Yes B) No
✅ B. Only list sources you really used.
3. What is plagiarism?
✅ Copying someone’s words or ideas without giving credit.
🔏 Verdict Stamp
Read each case. Decide the verdict: VERIFIED (reliable sources agree it is true), FALSE (reliable sources say it is wrong) or UNVERIFIED (not enough reliable proof). 6 cases. Can you stamp 5 or more correctly?
Chapter 5 summary
Ask strong questions • Judge your sources • Fact-check Claude • Cite and credit.