Life-Ready Society · Teacher and parent pack · Intellectual dimension
Critical Thinking and Media Literacy
Weigh evidence, spot biases and misinformation, and decide well.
8 lessons, about 1.6 hours of reading. Free lessons, videos and full sources: https://lifereadysociety.com/critical-thinking/
How to use this pack. Ask your teen or class to read one lesson online (about ten minutes), talk through the key points together, choose one practice task to try this week, then use the quiz to check what stuck. The answer key is on the last page. Free to print for home and classroom use.
The lessons at a glance
1. What Critical Thinking Really Is
Critical thinking is not about being negative or winning arguments. It is a set of habits for checking whether what you read, hear and believe actually holds up, and it is one of the skills universities and employers value most.
Key points
- Critical thinking means evaluating thinking, including your own, in order to improve it.
- Ask who, what, what evidence, and why before you accept a claim.
- Move from description to analysis to judgement.
- Staying undecided when evidence is weak is a strength, not a failure.
2. Claims, Evidence and Weak Arguments
An argument is a claim backed by reasons. Learning to separate the claim from the evidence, and spotting the common tricks that make weak arguments sound strong, will help you in debates, essays and every online comment section.
Key points
- Separate the claim, the evidence and the reasoning.
- Ad hominem and straw man attack the wrong target.
- False dilemmas and slippery slopes squeeze your choices unfairly.
- Post hoc and hasty generalisation misuse evidence.
- A bad argument does not automatically mean a false conclusion.
3. Cognitive Biases: Why Smart Brains Make Mistakes
Your brain uses mental shortcuts to make fast decisions. Most of the time they help, but they can also lead you to predictable errors. Knowing the common ones is the first step to catching them.
Key points
- Confirmation bias makes you find, read and remember what you already believe.
- Anchors, even random ones, pull your estimates towards them.
- Vivid, memorable events feel more common than they are.
- Past costs should not trap you in a bad choice.
- Systems and outside views beat willpower against bias.
4. Evaluating Sources: Lateral Reading and SIFT
Professional fact-checkers do not judge a website by how it looks. They leave it and check what others say about it. This lesson teaches you their fast, practical method.
Key points
- Fact-checkers beat historians and students by leaving the site and reading laterally.
- SIFT: Stop, Investigate the source, Find better coverage, Trace to the original.
- Do not judge a source by its design, logo or web address.
- Use click restraint before choosing a search result.
5. Misinformation, Deepfakes and Checking Images
Edited photos, old videos with new captions and AI-generated images spread fast, especially during emergencies and big news events. A few quick checks can stop you being fooled, and stop you fooling your friends and family.
Key points
- Most misleading content is real material in a false context.
- Reverse image search shows where and when a picture first appeared.
- Visual clues for deepfakes are getting weaker, so check the source.
- In the UAE, spreading false information is covered by a specific law.
- If in doubt, do not share.
6. Statistics and Charts in the News
Numbers feel objective, but the way they are chosen and drawn can completely change the story. These checks will help you read headlines, charts and health news with confidence.
Key points
- Correlation alone does not prove that one thing causes another.
- Always ask for the absolute risk behind a relative risk.
- Check the axis, the time frame and whether a chart shows totals or rates.
- Ask: compared with what, how many, and who paid?
7. Making Good Decisions
University choices, job offers, money and friendships all involve decisions under uncertainty. You cannot control luck, but you can control how well you think a decision through.
Key points
- A good decision can have a bad outcome; judge the process.
- Weight what matters before comparing options.
- Think in rough probabilities, not yes or no.
- A pre-mortem helps you spot problems before they happen.
- Ask people who will challenge you, not just agree.
8. Disagreeing Well and Changing Your Mind
You will meet people with very different views at university, at work and online, especially in a country as diverse as the UAE. Disagreeing respectfully, and being willing to change your mind when the evidence is strong, are signs of a confident thinker.
Key points
- Intellectual humility means holding beliefs as firmly as the evidence allows.
- HEAR: Hedge, Emphasise agreement, Acknowledge, Reframe to the positive.
- Argue against the strongest version of a view, not a straw man.
- Changing your mind with good evidence is a strength.
- You can disagree with an idea and still respect the person.
Talk about it, then try it
The real-life practice tasks from each lesson. Pick one or two a week and agree when you will check in.
- What Critical Thinking Really Is
- Pick one viral post or forwarded message you saw this week and answer the four questions: who, what, what evidence, why.
- Take a paragraph you wrote for a school assignment and label each sentence D (description), A (analysis) or J (judgement). Rewrite one D sentence so it becomes A or J.
- Next time a message makes you feel strongly, wait ten minutes before you react or share, and notice whether your view changes.
- Claims, Evidence and Weak Arguments
- Find three adverts or social media posts this week and identify the claim and the evidence in each. Is the evidence real, relevant and enough?
- Watch a short debate or panel discussion and note any example of ad hominem, straw man, false dilemma or bandwagon.
- Rewrite one weak argument you have heard (or made) so that it uses evidence instead of a fallacy.
- Cognitive Biases: Why Smart Brains Make Mistakes
- Pick a belief you hold strongly (about a sports team, a phone brand or a study method) and spend ten minutes finding the strongest evidence against it.
- Before you next check the price of something you want to buy, write down what you think it is worth. Then compare with the advertised "was" price.
- Think of something you are continuing mainly because of time or money already spent. Ask: if I were starting today, would I choose this?
- Evaluating Sources: Lateral Reading and SIFT
- Choose a website you use for homework and read laterally: search its name with "funding" or "criticism" and note what you find in under five minutes.
- Next time you search for something, practise click restraint: read all the first-page results before clicking, and explain to yourself why you chose the one you did.
- Apply all four SIFT moves to one claim from social media this week.
- Misinformation, Deepfakes and Checking Images
- Take a striking image from your feed this week and run a reverse image search on it. Find its earliest appearance.
- Try the MIT Media Lab Detect Fakes test or a similar quiz, and note which clues helped you.
- Agree a family or friend-group rule: nothing gets forwarded in the group chat until someone has checked the source.
- Statistics and Charts in the News
- Find one health or science headline this week. Identify whether it reports relative or absolute risk, and try to find the actual starting number.
- Look at a chart in a news article or on social media and check: where does the axis start, what time period is shown, and are these totals or rates?
- Think of two things that rise together (for example air conditioner sales and swimming pool visits in the UAE summer) and name the confounding factor.
- Making Good Decisions
- Use a weighted pros and cons table for a real choice you face (a course, a club, a purchase). Compare the result with your gut feeling.
- Run a five-minute pre-mortem on a plan for this month: imagine it failed and list why. Fix the top two reasons.
- For one week, add a rough percentage to predictions you make ("70% sure I'll finish this tonight") and check how accurate you were.
- Disagreeing Well and Changing Your Mind
- In your next disagreement with a friend or family member, use all four HEAR steps and notice how the conversation feels.
- Pick a view you disagree with and write the strongest possible argument for it in five sentences.
- Once this week, say out loud "I've changed my mind" about something, however small, when you learn something new.
Quiz
Name: ______________________ Date: ____________ Circle one answer for each question.
1. According to Paul and Elder, as quoted by Texas Tech University, critical thinking is best described as:
- Memorising facts accurately so you can repeat them in exams
- Always taking the opposite view to test what others believe
- Analysing and evaluating thinking with a view to improving it
- Finding the faults and weak points in other people's arguments
2. In the Leeds model used by Abertay University, which question belongs to the 'judgement' group?
- What if?
- Where?
- So what?
- Who?
3. "You can't trust her view on climate policy, she failed maths at school." Which fallacy is this?
- Ad hominem
- Slippery slope
- Circular argument
- Bandwagon
4. "Either you study medicine or you'll never have a respected career." Which fallacy is this?
- Guilt by association
- Post hoc
- Red herring
- False dilemma
5. In Tversky and Kahneman's wheel experiment, what happened to people who saw the number 65?
- Most of them gave exactly 65 as their answer to the question
- They ignored the number completely and gave the same estimates
- Their median estimate was higher (45) than those who saw 10 (25)
- They gave lower median estimates than those who saw 10
6. Why do many people fear flying more than driving, according to Simply Psychology?
- Flying is statistically more dangerous than driving the same distance
- Cars have far fewer recorded accidents than planes do each year
- Plane crashes are rarely reported, so people imagine the worst
- Plane crashes are dramatic and memorable, so they come to mind easily
7. In the Stanford History Education Group study, which group was fastest and most accurate at judging websites?
- PhD historians
- Professional fact-checkers
- All three groups performed equally
- Stanford undergraduates
8. What does 'lateral reading' mean?
- Leaving a site and opening new tabs to see what other sources say about it
- Reading only the headline and first paragraph, then deciding if it is true
- Reading every page of a website carefully from top to bottom before judging
- Checking whether the website's design and logo look professional enough
9. A dramatic flood photo is shared as 'happening now'. What is the most useful first check?
- Count how many times it has been shared, since popular posts are real
- Check whether the colours look bright and the picture is sharp
- Run a reverse image search to see when and where it first appeared
- Ask the person who forwarded it whether they believe it is real
10. According to PBS NewsHour, how reliable are visual clues for spotting AI-generated images now?
- Always reliable, so they are all you need to spot an AI image
- Never useful at all, so there is no point looking for them
- Less common than before, so useful but not enough on their own
- Only useful on black and white images, not on colour photos
11. A risk goes from 4 in 1,000 to 6 in 1,000. Which statement is correct?
- The relative risk rises by 2% and the absolute risk by 2 in 100
- The relative and absolute risk both rise by 50% over the period
- The absolute risk rises by 50% and the relative risk by 2 in 1,000
- The relative risk rises by 50% and the absolute risk by 2 in 1,000
12. Ice cream sales and drownings rise together. What is the best explanation?
- Hot weather is a confounding variable that increases both
- The data must be fake, because the two cannot be linked
- Eating ice cream directly causes people to drown in water
- Drownings in the news cause people to buy more ice cream
13. What is a pre-mortem?
- A medical check that some schools require before students sit exams
- Imagining a plan has already failed and listing why, before you start
- Listing only the benefits of a plan, to build confidence before you start
- Reviewing what went wrong after a project has ended, to learn lessons
14. In Veinott, Klein and Wiggins's study, what did the pre-mortem do compared with other methods?
- It made people more overconfident
- It had no effect at all
- It took several days to complete
- It reduced overconfidence the most
15. In Julia Minson's HEAR framework, what does the 'A' stand for?
- Always agree, to keep the peace
- Avoid the topic if it gets heated
- Acknowledge the opposing perspective
- Attack the weakest point in their view
16. How does the Greater Good Science Center describe intellectual humility?
- Never sharing your opinions, in case they turn out wrong
- Believing you are usually wrong whenever others disagree
- Always agreeing with experts, whatever the evidence says
- An appropriate awareness of our intellectual limitations
Answer key
- C: Texas Tech University quotes Paul and Elder: critical thinking is "the art of analyzing and evaluating thinking with a view to improving it".
- C: Abertay University: description asks who, what, where, when; analysis asks how, why, what if; judgement asks so what and what next.
- A: Kennesaw State University and Purdue OWL: ad hominem attacks the person's character or background instead of their argument.
- D: Purdue OWL and Kennesaw State: a false dilemma (either/or) presents only two options when many more exist.
- C: Harvard Program on Negotiation: the median estimate was 25 after seeing 10 and 45 after seeing 65, showing that even random anchors affect judgement.
- D: Simply Psychology: the availability heuristic makes vivid, heavily reported events feel likely; it cites research estimating driving the same distance is about 65 times riskier than flying.
- B: Stanford News (2017): fact-checkers outperformed both historians and students, mainly because they read laterally.
- A: Stanford News: fact-checkers quickly scanned a site, then opened new tabs to find context and other perspectives before trusting it.
- C: GIJN: reverse image search tools such as TinEye and Google show when and where an image first appeared, revealing recycled photos.
- C: PBS NewsHour: visual clues "aren't as common as they once were"; it also recommends reverse image searches and checking reputable sources.
- D: Using Cancer Research UK's definitions: 6 is 1.5 times 4, a 50% relative increase; the absolute increase is 2 extra cases per 1,000 (0.2 percentage points).
- A: Mathwords and LibreTexts: temperature is the lurking (confounding) variable behind both, so the correlation does not show causation.
- B: Gary Klein (Psychology Today): team members imagine the plan has failed and write down why, then look for ways to prevent those problems.
- D: Gary Klein (Psychology Today): students using the pre-mortem showed the greatest reduction in overconfidence compared with critiques or pros-and-cons lists.
- C: Julia Minson (Harvard Kennedy School): A is Acknowledge, taking a few seconds to restate the other person's position so they know you heard it.
- D: Greater Good Science Center: intellectual humility is an "appropriate awareness of our intellectual limitations", matching confidence to evidence.
General information only, written from the sources listed in each online lesson. Laws, numbers and services change, so check official sources. Life-Ready Society, https://lifereadysociety.com/critical-thinking/