Two Truths and a Lie
Class Size
Whole Class
Time
10-15 min
Technology
None
Domain
Cognitive
Difficulty
Beginner
Delivery
Face-to-Face, Online, Hybrid
Overview
Two Truths and a Lie is a review game where each student writes three statements about the lesson content: two true and one false. Classmates vote on which is the lie. This forces students to review content and identify potential misconceptions.
Educational Purpose
Review can be passive and boring. Two Truths and a Lie makes review active and social. Creating plausible lies requires deep understanding of the content, and identifying lies requires critical analysis.
Educational Psychology Behind It
Retrieval practice research shows that generating content (not just recognizing it) strengthens memory. Creating plausible false statements requires understanding the boundaries of correct and incorrect, which deepens conceptual understanding.
Why It Works
Retrieval practice research shows that generating content (not just recognizing it) strengthens memory. Creating plausible false statements requires understanding the boundaries of correct and incorrect, which deepens conceptual understanding.
When to Use It
Use as a review activity at the end of a lesson or unit. Grade 3 and up. Works in any subject. Can be done individually, in pairs, or as a class.
When NOT to Use It
Avoid letting lies be too obvious or too obscure. Avoid using it as the only review strategy. Do not let students create lies that are offensive or personal.
Best Grade Levels
Grades Grade 3 to Grade 10
Best Subjects
All subjects
Step-by-Step Classroom Guide
- 1Have each student (or pair) write three statements about the lesson content: two true, one false.
- 2Students read their statements aloud or post them.
- 3Classmates vote on which statement is the lie.
- 4Reveal the answer and briefly explain why the false statement is false.
- 5Discuss any statements that fooled the class: Why was this lie convincing? What misconception does it exploit?
- 6Continue with the next student.
Classroom Scenario
Mr. Garcia reviews Grade 7 Science: the solar system. A student writes: '1. Jupiter is the largest planet. 2. Mars is called the Red Planet because of iron oxide. 3. Saturn is the only planet with rings.' The class votes on the lie. Most vote for 3. They are wrong -- Saturn is not the only planet with rings (Jupiter, Uranus, and Neptune also have rings, just fainter). The lie was 3, and the discussion reveals a common misconception. The student demonstrates deep understanding by crafting a lie that exploits what the class doesn't know.
Sample Dialogue
Advantages
- Forces deep content review through lie creation
- Engaging and fun
- Reveals common misconceptions through the lies students create
- Students learn from each other's statements
- Quick and adaptable to any content
Limitations
- Creating good lies requires content mastery
- Can be time-consuming if every student presents
- Some students may create inappropriate lies
- Can become repetitive if overused
Common Mistakes
- Letting lies be too obvious or too obscure
- Not discussing why the lie was convincing
- Skipping the misconception analysis
- Using it as the only review strategy
Variations & Adaptations
Adjust the complexity of the summary task, time allocated, and format based on the lesson's content and student energy.
Technology Integration
This strategy requires no technology. If desired, enhance with digital tools such as Google Docs for collaborative writing or Padlet for sharing responses.
Assessment Ideas
Assess through observation of participation, quality of review, and formative checks such as exit tickets or quick writes.
Reflection Questions
🤔 What did you learn from this activity?
🤔 What was the most challenging part?
🤔 How could you use this strategy in a different subject?
🤔 What would you do differently next time?
References & Further Reading
- Roediger, H. & Karpicke, J. (2006). Test-Enhanced Learning. Psychological Science.