You will learn
- Define corroboration, contradiction, triangulation, gap.
- Compare sources.
- Assess confidence.
- Handle contradictions.
Version 0.2 · expanded edition · built from cited public sources Content is based on the official frameworks and sources listed under Sources and standards. No official endorsement is claimed. Written in the style of common primary school assessments. No exam result is promised.
Student lesson
- More independent sources give stronger support.
- Contradictions need investigation.
- Triangulation uses different kinds of evidence.
- Gaps show where more research is needed.
Words to know
support for a claim from more than one independent source
when two sources say things that cannot both be true
checking a claim using at least three different kinds of source
something we want to know that the sources do not tell us
1. Discover: Three witnesses
Mr Cole describes a made-up flood in a town. A newspaper says the water rose two metres. A council record says one and a half. A photograph shows water at a door frame. “They roughly agree the flood was serious,” he says. “They disagree on exact height. The photograph is physical evidence, the record is official, the newspaper is a report. Together they give more confidence than one alone. What is missing? Who was helped, and how long did it last?”
Think: What would you do if two good sources disagreed?
2. Understand: Corroborating evidence
Idea 1: Support from many
Corroboration means a claim is supported by more than one independent source. Sources that copy each other do not count as independent. Triangulation uses at least three different kinds of evidence, such as a document, an image and an oral account.
Idea 2: Agreement and conflict
Sources may agree, disagree or partly agree. A contradiction means both cannot be true. Ask why: different times, different viewpoints, errors or different purposes. Seek a further source. Sometimes the best conclusion is that it is uncertain.
Idea 3: Gaps and confidence
A gap is what the sources do not tell us. State your confidence: “probably”, “certainly”, “uncertain”. Say what more evidence would help. Honest historians and researchers separate what is known, what is likely and what is unknown.
3. Worked examples
Example 1 (I show you): Define
Corroboration.
- Think.
- Say.
- Check.
Answer: Support from more than one independent source.
Example 2 (We do it together): Define
Contradiction.
- Think.
- Say.
- Check.
Answer: Sources that cannot both be true.
Example 3 (You try): Name
A gap.
Show the steps and answer
- Think.
- Say.
- Check.
Answer: What the sources do not tell.
Did you know?
Historians sometimes use tree rings, soil layers and oral traditions together to confirm when an event happened.
Why this matters
Corroboration protects us from relying on a single, possibly mistaken, account.
4. Explore: Evidence grid
Use three short approved sources on one claim. Fill a grid showing what each says. Mark agreements, contradictions and gaps. Write a conclusion with a confidence word and one question to research next.
- Read.
- Fill.
- Mark.
- Conclude.
Think about it: what did you notice?
What did you notice? Agreement builds confidence.
5. Practise
Say it in a sentence
Use these starters when you talk about the lesson. Say them out loud.
- Corroboration is ___.
- A contradiction is ___.
- Triangulation is ___.
- A gap is ___.
Guided practice
Question 1. What is corroboration?
Support from several sources.
Question 2. What is a contradiction?
Cannot both be true.
Question 3. What is triangulation?
Three kinds of evidence.
Independent practice
Level 1: Start
- What is corroboration?
- What is a contradiction?
- What is triangulation?
- What is a gap?
- Name a confidence word.
Level 2: Grow
- Why independent sources?
- Why investigate contradictions?
- Why state confidence?
Level 3: Stretch
- Read sources.
- Fill the grid.
- Write a conclusion.
Answers are in the answer key below. Try first, then check.
6. Apply: Social Studies in everyday life
Explain what to do when two sources contradict each other.
Show a sample answer
Ask why and seek a third.
Another one. Find two different sources about one safe fact and compare them with an adult.
Show a sample answer
Share.
7. Common mistakes
Fix: More strengthens.
Fix: They show where to look.
8. Lesson summary and revision card
- I can define corroboration, contradiction, triangulation, gap.
- I can compare sources.
- I can assess confidence.
- I can handle contradictions.
9. Check and master
Answer all 14 questions. You will see feedback after each one.
Your result appears here after you answer every question.
10. Key takeaways
- More independent sources give stronger support.
- Contradictions need investigation.
- Triangulation uses different kinds of evidence.
- Gaps show where more research is needed.
11. Next lesson
Next lesson: Recognising bias and missing perspectives. Keep going with the next idea in this course.
Exam practice
These questions are written in the style of common school and international primary assessments. Try them on your own, without looking back. Then check your answers in the marking guide. The marks are shown in brackets.
- Define corroboration and gap. [2 marks]
- Name three kinds of evidence. [3 marks]
- Explain how to handle a contradiction. [3 marks]
- Explain why independence matters. [2 marks]
Total: 10 marks.
Marking guide and model answers
- Corroboration [1]; gap [1]
- Three [3]
- Ask why [1]; seek source [1]; state confidence [1]
- Reason [1]; effect [1]
Score guide: 9 to 10 = secure. 6 to 8 = nearly there, revise the parts you missed. Under 6 = work through the lesson again with a grown-up.
Printable worksheet
- What is corroboration?
- What is a contradiction?
- What is triangulation?
- What is a gap?
- Name a confidence word.
- Why independent sources?
- Why investigate contradictions?
- Why state confidence?
- Read sources.
- Fill the grid.
Homework
Draw an evidence grid.
Answer key and marking scheme
| Question | Expected response | Marks |
|---|---|---|
| 1. What is corroboration? | Support from several sources. | 1 |
| 2. What is a contradiction? | Cannot both be true. | 1 |
| 3. What is triangulation? | Three kinds of evidence. | 1 |
| 4. What is a gap? | Unknown information. | 1 |
| 5. Name a confidence word. | Probably. | 1 |
| 6. Why independent sources? | Real support. | 1 |
| 7. Why investigate contradictions? | Find truth. | 1 |
| 8. Why state confidence? | Honesty. | 1 |
| 9. Read sources. | Read. | 1 |
| 10. Fill the grid. | Grid. | 1 |
| Total | 10 |
Independent practice answers. Level 1: 1 Support from several sources.; 2 Cannot both be true.; 3 Three kinds of evidence.; 4 Unknown information.; 5 Probably.. Level 2: 1 Real support.; 2 Find truth.; 3 Honesty.. Level 3: 1 Read.; 2 Grid.; 3 Conclude..
Quiz answers: 1 B, 2 C, 3 A, 4 B, 5 C, 6 A, 7 B, 8 C, 9 A, 10 B, 11 C, 12 A, Challenge 1 B, Challenge 2 C.
Mastery and remediation
| Objective | Bronze (Developing) | Silver (Proficient) | Gold (Advanced) |
|---|---|---|---|
| O1 Define corroboration, contradiction, triangulation, gap | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O2 Compare sources | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O3 Assess confidence | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O4 Handle contradictions | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
Courseversity badge thresholds (overall quiz score): Gold = 90–100%; Silver = 80–89.9%; Bronze = 70–79.9%. A badge is never a full record of progress.
If a learner struggles
- Find the misconception: “One good source is always enough.” More strengthens.
- Explain another way: use real objects, pictures or actions first, then words.
- Show a simpler example: Make a corroboration chart.
- Guided practice: work through one example together and let the learner try the next one.
- Reassess: use the quiz again or the worksheet.
- Move on when the learner shows Silver-level evidence independently.
For parents and guardians
In this lesson your child compares sources on one claim. Please practise asking for a second source. You do not need to be an expert to help.
- Ask for another source.
- Compare accounts.
- Say how sure you are.
- Ask “how do you know?” after each answer, and listen.
- Praise effort, not only right answers. Mistakes are how we learn.
- Ten to fifteen minutes a day is better than one long session.
Teacher package
1–5. Objectives, prerequisites, materials, preparation, duration
Lesson objectives. Learners will: define corroboration, contradiction, triangulation, gap; compare sources; assess confidence; handle contradictions.
Prerequisite knowledge. Grade 6 ideas: compelling questions, research plans, source types, provenance and credibility.
Materials. Grids, source cards. Low-resource options: use chalk or charcoal on a board or wall, drawings in the sand, and objects from the classroom instead of printed materials.
Preparation. Prepare evidence grids.
Suggested duration. 45–60 minutes. It can be split into two shorter sessions.
6–9. Teaching procedure, explanation notes, guided and independent activities
Introduction (5 min). Tell the three witnesses story.
Explanation (10 min). Teach corroboration.
Guided activity (10 min). Evidence grid.
Independent activity (10 min). Discuss.
Assessment and reflection (5 min). Ask each learner to say one thing they learned and how they know it.
Key questions. How do we build confidence in a claim?
Teacher explanation notes. Start with a picture, story, map or local example. Then talk about what was seen, then draw and write. Always ask “how do you know?” and invite more than one view. Treat every family, culture and community with respect, and never ask learners to share private information.
10–12. Differentiation, formative assessment, common misconceptions
Support. Use pictures, maps, real objects and short sentences, and let learners work with a partner. Let learners point, show, act or draw instead of writing. Extension. Ask learners to find a new example from their own community and explain how they know.
Formative assessment. Listen to learners read and explain, ask “how do you know?”, and check the independent work.
Misconceptions. “One good source is always enough.” More strengthens.
13–15. Assessment questions, answer keys, marking scheme
Use the quiz, the 10-mark exam practice and the worksheet on this page. All answers and marking guides are in the answer sections above. Re-check every answer before use.
16–19. Remediation, enrichment, homework, teacher reflection
Remediation. Make a corroboration chart. Enrichment. Find one new example near your home or school, draw or write about it and explain it to someone. Homework. See above.
Teacher reflection. After teaching, record: which ideas learners understood; which misconceptions occurred; which activities worked; which learners need more practice; and what to improve next time.
Sources and standards
This lesson is based on the sources below, and no official endorsement is claimed. Reference starting points: NCSS standards and C3 Framework, Cambridge Primary Humanities and the IB Primary Years Programme. Where a standard code is named, it points to the official framework.
Research used to shape this lesson. Courseversity Social Studies curriculum, Grade 6 Unit 1, topic 6; NCSS C3 Framework, evaluating sources, developing claims and communicating conclusions; Cambridge Lower Secondary Humanities, enquiry and evidence skills; IB Primary Years Programme, how we share the planet and how we organise ourselves. These sources informed the lesson.