Critical Thinking Online: Misinformation and Manipulation
A lesson helping older students develop the skills to evaluate online information, spot misinformation, and recognise manipulation tactics.
Overview
This lesson equips older students with critical thinking skills for navigating online information. Through analysis of real-world examples, students learn to identify misinformation, understand how algorithms create echo chambers, and recognise manipulation tactics used by individuals and organisations online.
Learning Objectives
- •Identify common types of misinformation and how they spread
- •Understand how algorithms create echo chambers and filter bubbles
- •Apply fact-checking strategies to evaluate online claims
- •Recognise manipulation tactics in online communication
Activities
Spot the fake
10 minutesStudents are shown a mix of real and fabricated social media posts, news headlines, and statistics. They vote on which are real and which are fake, then discuss how they made their decisions and where they went wrong.
The algorithm experiment
10 minutesDemonstrate how algorithms work by showing how two different search histories or social media profiles produce completely different content feeds for the same topic. Discuss how this creates echo chambers.
Fact-checking toolkit
15 minutesIntroduce a practical fact-checking process: check the source, look for corroboration from reputable outlets, check the date, examine the evidence, and consider the motive. Students apply this to three claims and present their findings.
Manipulation in practice
15 minutesAnalyse real examples of online manipulation: phishing messages, social engineering, pressure tactics in group chats, and influencer marketing that does not disclose sponsorship. Students identify the manipulation technique in each example.
Personal action plan
5 minutesStudents write three personal commitments for how they will approach online information differently after this lesson.
Discussion Points
- •Why is misinformation often more shareable than factual information?
- •How can you disagree with someone online without being disrespectful?
- •Should social media platforms be responsible for fact-checking content?
- •How do you know which sources of information to trust?
Key Takeaways
- •Not everything online is true — even if it looks professional or has been widely shared
- •Algorithms show you more of what you already engage with, which can create a distorted view of reality
- •A simple fact-checking process can protect you from most misinformation
This content is designed to support professionals in their safeguarding role. It does not replace your organisation's safeguarding policies or training requirements.
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Last reviewed: 2026-03-15