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Lesson 8 of 12 · Using AI tools

AI can be wrong: checking answers

Students judge AI claims in a true-or-fake game, then hunt for the one invented detail hidden in three confident answers and plan how they would check it.

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Lesson 8 of 12 · Using AI tools · Teacher's plan

AI can be wrong: checking answers

Students judge AI claims in a true-or-fake game, then hunt for the one invented detail hidden in three confident answers and plan how they would check it.

Students will be able to

  • explain why a chatbot can state invented facts confidently
  • find a made-up detail inside an answer that is mostly true
  • name three ways to check a fact: a second source, an official site, or asking the source
  • decide which answers need checking most

Prepare

  • A projector and one teacher device with internet, or a few devices for pairs
  • The ManuAI page /play/lab/true-or-fake loaded in advance (free, no account)
  • Three AI-style answer cards, one set per group (see the plan), or written on the board
  • One worksheet per student

Words to know

Made-up fact:
Something a chatbot states as true that it invented. Also called a hallucination.
Source:
Where a fact comes from: a book, a website, an expert or the person involved.
Second source:
A different, independent place you check to see if it says the same thing.
Official site:
The website of the organisation that is responsible for the fact, such as a ministry or a museum.

Main activity · In the browser: ManuAI

True or fake, then find the invented detail

The class plays /play/lab/true-or-fake together on the projector, or in pairs, deciding whether each AI claim is true. Groups then read three answers written in a confident AI style, each hiding one invented detail, find it and say how they would check it.

ManuAI pages for this lesson

The 45-minute plan · 45 minutes

Warm-up6 min

Two truths and a lie

  • Say three facts about yourself: two true, one invented. Students vote on the invented one.
  • Ask: "How did you decide? Did I sound less sure when I lied?"
  • Explain that a chatbot sounds equally sure when it invents something. Remind them of lesson 2: it picks likely words.
Activity17 min

True or fake, then the hidden detail

  • Play /play/lab/true-or-fake on the projector. For each claim, students show thumbs up for true and thumbs down for fake, then reveal.
  • After eight or ten claims, ask which ones fooled the most people and why.
  • Hand out the three answer cards. Card 1: Hạ Long Bay is in Quảng Ninh, has more than a thousand islands, became a UNESCO World Heritage Site in 1994, and hosted the sailing events of the 2008 Olympic Games.
  • Card 2: water boils at 100°C at sea level and at a lower temperature high on a mountain, and the steam you see is hydrogen gas. Card 3: the Mekong flows through six countries and splits into many branches in Vietnam, and it was named after a French explorer called Henri Mekong.
  • Groups underline the invented detail on each card (the Olympics, hydrogen, Henri Mekong) and write how they would check it.
Practice17 min

How would you check?

  • Go through the cards. Card 1 is a puzzle: the 2008 Olympics were in China, so check an official Olympic or tourism site. Card 2: steam is water vapour, check a science textbook. Card 3: the name has nothing to do with an explorer, check an encyclopedia.
  • Write three checking moves on the board: a second source, an official site, ask the source.
  • Students complete the worksheet in pairs.
  • Ask: "Which facts must you always check?" Agree on health, money, dates and names, and anything you will hand in or share.
Wrap-up5 min

Mostly true can still be wrong

  • Point out that each card was mostly true. That is what makes one wrong detail easy to miss.
  • Write on the board: sounds sure, still check.
  • Hand out the exit ticket.

Teacher tips

  • The full fact-check kit at /materials/fact-check-lesson has slides, a ten-question quiz and teacher notes if you want a second lesson on this.
  • Misconception: "if a chatbot gives a link, the fact is true". Links can be broken or say something different. Open the source and read it.
  • Devices: one projected screen is enough. If pairs have devices, the true-or-fake lab is free with no account. Do not ask students to sign up for anything.

Exit ticket answers

  1. Why can a chatbot state a made-up fact very confidently? D. It writes likely-sounding words and does not know which ones are true
  2. Which is a good second source for a science fact? B. A school science textbook
  3. Name two kinds of facts you should always check before using or sharing them, and say why. A good answer: Health facts, because a wrong dose or advice can hurt someone. Money facts, dates or names in homework, because mistakes cost money or marks and can spread to others.
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Worksheet · Lesson 8 of 12 · Using AI tools

Find the invented detail

NameClassDate

Each answer below sounds confident. Look for the detail that does not fit and plan how to check it.

  1. 1For each answer card, write the invented detail and one way to check it.

    CardInvented detailHow I would check
    Hạ Long Bay
    Boiling water
    Mekong River

  2. 2A chatbot tells you a medicine dose for a headache. What should you do?

    • Take it, the chatbot sounded sure
    • Ask the chatbot to repeat it
    • Share it with your friends
    • Check with a parent, a doctor or the label on the medicine box

  3. 3Why is an answer that is mostly true more dangerous than one that is obviously wrong?

  4. 4Match each fact to the best way to check it.

    Fact from a chatbotBest way to check
    The date of the school sports day
    The population of Đà Nẵng
    A quote it says your favourite writer said

  5. 5Write one AI-style answer of your own with one invented detail, for a partner to find.

Free to print and share in classrooms and at home.ManuAI · free AI lessons for everyone · ai.manusignal.com

Cut along the dotted lines: two tickets per page.

Exit ticket · Lesson 8ManuAI

AI can be wrong: checking answers

NameClassDate

  1. 1Why can a chatbot state a made-up fact very confidently?

    • AIt wants to trick you
    • BIt is broken
    • CIt looks everything up in a book
    • DIt writes likely-sounding words and does not know which ones are true

  2. 2Which is a good second source for a science fact?

    • AThe same chatbot asked again
    • BA school science textbook
    • CA comment under a video
    • DA message forwarded in a group chat

  3. 3Name two kinds of facts you should always check before using or sharing them, and say why.