You will learn
- Compare sources.
- Find agreement and difference.
- Judge reliability.
- Give a reasoned conclusion.
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
- We compare more than one source.
- Agreement makes a claim stronger.
- Differences need explaining.
- We say how sure we are.
Words to know
to find how things are alike and different
to support with another source
a leaning for or against something that is not fair
a final judgement based on evidence
1. Discover: Two accounts of the flood
Two sources describe a flood in a nearby village. A newspaper says 20 houses were damaged. A villager’s memory says about 30. A photograph shows many damaged houses. “They agree that many houses were damaged,” says Mr Cole. “They differ on the number. Why?” Aminata says, “The villager may not have counted exactly.” “So we say between 20 and 30,” says Mr Cole. “And we say how sure we are.”
Think: Why is one source not enough?
2. Understand: Comparing
Idea 1: Comparing sources
To compare sources, put them side by side on the same question. Note where they agree and where they differ. When sources agree they corroborate each other, which makes a claim stronger.
Idea 2: Reliability
Judge each source: Who made it? When? Why? How close was the maker to the event? Is there bias, an unfair leaning? Sources made close to the event by careful, honest people with no reason to mislead are usually more reliable, but all should be checked.
Idea 3: Conclusions
A conclusion is a final judgement based on evidence. Say what the sources show, what they do not show and how sure you are, for example “most likely” or “we cannot be certain”. Avoid claiming more than the evidence supports.
3. Worked examples
Example 1 (I show you): Compare
Where do they agree?
- Read.
- Compare.
- Say.
Answer: Many houses damaged.
Example 2 (We do it together): Judge
Which is more reliable?
- Check.
- Compare.
- Say.
Answer: The one made nearest the event.
Example 3 (You try): Conclude
Write a conclusion.
Show the steps and answer
- Think.
- Write.
- Check.
Answer: Between 20 and 30 houses.
Did you know?
Historians often use the word “triangulate”, borrowed from map-making, to mean checking a fact against at least three sources.
Why this matters
Comparing evidence protects us from false or one-sided claims.
4. Explore: Evidence table
Use two or three sources on one question. Fill in a table: claim, source, agrees, differs, reliability. Write a conclusion with how sure you are.
- Read.
- Table.
- Judge.
- Conclude.
Think about it: what did you notice?
What did you notice? Agreement made us more sure.
5. Practise
Say it in a sentence
Use these starters when you talk about the lesson. Say them out loud.
- To compare is ___.
- To corroborate is ___.
- Bias is ___.
- A conclusion is ___.
Guided practice
Question 1. What does corroborate mean?
Support with another source.
Question 2. What is bias?
Unfair leaning.
Question 3. What is a conclusion?
Final judgement.
Independent practice
Level 1: Start
- What does corroborate mean?
- What is bias?
- What is a conclusion?
- Why compare?
- What do we say in a conclusion?
Level 2: Grow
- Why not one source?
- Why check closeness?
- Why say how sure?
Level 3: Stretch
- Fill a table.
- Judge sources.
- Write a conclusion.
Answers are in the answer key below. Try first, then check.
6. Apply: Social Studies in everyday life
Give two things to check about a source.
Show a sample answer
Author; date.
Another one. Compare two sources with an adult on a simple question.
Show a sample answer
Share.
7. Common mistakes
Fix: Compare several.
Fix: They strengthen but do not prove.
8. Lesson summary and revision card
- I can compare sources.
- I can find agreement and difference.
- I can judge reliability.
- I can give a reasoned conclusion.
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
- We compare more than one source.
- Agreement makes a claim stronger.
- Differences need explaining.
- We say how sure we are.
11. Next lesson
Next lesson: Presenting findings. 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.
- Compare two sources and say where they agree and differ. [3 marks]
- Name three things to check about reliability. [3 marks]
- Write a conclusion with how sure you are. [2 marks]
- Say why one source is not enough. [2 marks]
Total: 10 marks.
Marking guide and model answers
- Agree [1]; differ [1]; reason [1]
- Three [3]
- Evidence [1]; certainty [1]
- May be wrong [1]; may be biased [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 does corroborate mean?
- What is bias?
- What is a conclusion?
- Why compare?
- What do we say in a conclusion?
- Why not one source?
- Why check closeness?
- Why say how sure?
- Fill a table.
- Judge sources.
Homework
Compare two sources on a topic and write a conclusion.
Answer key and marking scheme
| Question | Expected response | Marks |
|---|---|---|
| 1. What does corroborate mean? | Support with another source. | 1 |
| 2. What is bias? | Unfair leaning. | 1 |
| 3. What is a conclusion? | Final judgement. | 1 |
| 4. Why compare? | Check. | 1 |
| 5. What do we say in a conclusion? | How sure we are. | 1 |
| 6. Why not one source? | May be wrong. | 1 |
| 7. Why check closeness? | First-hand. | 1 |
| 8. Why say how sure? | Honesty. | 1 |
| 9. Fill a table. | Table. | 1 |
| 10. Judge sources. | Judge. | 1 |
| Total | 10 |
Independent practice answers. Level 1: 1 Support with another source.; 2 Unfair leaning.; 3 Final judgement.; 4 Check.; 5 How sure we are.. Level 2: 1 May be wrong.; 2 First-hand.; 3 Honesty.. Level 3: 1 Table.; 2 Judge.; 3 Conclusion..
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 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 |
| O2 Find agreement and difference | 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 Judge reliability | 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 Give a reasoned conclusion | 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 source is enough.” Compare several.
- Explain another way: use real objects, pictures or actions first, then words.
- Show a simpler example: Make an evidence-weighing poster.
- 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. Please ask “how do we know?” about everyday claims. You do not need to be an expert to help.
- Ask how we know.
- Compare sources.
- Praise careful thinking.
- 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: compare sources; find agreement and difference; judge reliability; give a reasoned conclusion.
Prerequisite knowledge. Grade 3 ideas: enquiry questions, observation, primary and secondary sources and photographs.
Materials. Source cards, comparison tables. 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 source sets.
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 two accounts of the flood story.
Explanation (10 min). Teach comparing evidence.
Guided activity (10 min). Evidence table.
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 compare evidence and reach conclusions?
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 source is enough.” Compare several.
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 an evidence-weighing poster. 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 3 Unit 1, topic 9; NCSS C3 Framework, gathering and evaluating sources and communicating conclusions; Cambridge Primary Humanities, enquiry and evidence; IB Primary Years Programme, how we find out. These sources informed the lesson.