In simple terms
A friendly intro before the formal notes — no formulas yet.
Be a History Detective
Paper 1 turns you into a historical detective. You are given a set of clues (sources) about a specific event and must use them to piece together what happened and why.
Imagine two friends have had a major argument and you're trying to figure out what really happened. You get one version of the story from Friend A, another from Friend B, and a text message from a mutual friend who saw part of it. You can't just take any single story as the absolute truth. You have to consider who is telling you what (Origin), why they are telling you (Purpose), and what their personal biases might be (Limitations) to build a credible picture of the event. That's exactly what you do with historical sources in Paper 1.
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Deconstruct the Question: First, break down what the question is asking. Identify the command terms (e.g., 'compare', 'evaluate') and the specific historical focus.
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Analyse Each Source (OPCVL): For every source, systematically analyse its Origin, Purpose, and Content. Then, use this information to judge its Value and Limitations for a historian studying the topic.
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Compare and Contrast: Actively juxtapose the sources. Find specific points of agreement (corroboration) and disagreement (contradiction) in their content and perspectives.
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Synthesise and Argue: For the final question, combine evidence from all the sources with your own contextual knowledge. Build a coherent and balanced argument that directly answers the prompt.
Explore the concept
Use the live diagram and synced steps — play it or tap a step card to walk through.
Full topic notes
Formal explanation with the rigour you need for the exam.
The Anatomy of Paper 1
Paper 1 is a source-based paper. You will be presented with up to five sources (which can be text, images, cartoons, statistics, or maps) all related to a specific historical case study. The paper typically consists of four questions.
Question 1: A comprehension question on one source (e.g., 'According to Source A...'). (3 marks)
Question 2: An analysis question on one source, often a visual one (e.g., 'What is the message of Source C?'). (2 marks)
Question 3: A comparison and contrast question on two sources (e.g., 'Compare and contrast what Sources B and D reveal...'). (6 marks)
Question 4: A 'mini-essay' requiring you to use all the sources and your own knowledge to evaluate a historical claim. (9 marks)
The Historian's Toolkit: OPCVL
The most effective method for analysing any source is the OPCVL framework. This acronym helps you to systematically break down a source and evaluate its utility. You must explicitly refer to the source's origin and purpose when discussing its value and limitations.
Origin + Purpose → Value & Limitations
Origin: Who made it? When? Where? What type of source is it?
Purpose: Why was it made? Who was the intended audience?
Content: What does the source say or show? Summarise its main points or message.
Value: Based on its origin and purpose, how is this source useful for a historian studying this topic?
Limitations: Based on its origin and purpose, what are the problems with this source (bias, perspective, scope) for a historian?
Comparing and Contrasting Sources
The comparison question (Question 3) requires you to do more than just describe two sources separately. You must create a running commentary that directly compares and contrasts them on specific points. Structure your answer thematically, not source-by-source. For each theme, explain what both sources say and how they are similar or different.
Worked examples
See the formulas applied — reveal one step at a time, like the exam.
Study Source A, a Soviet cartoon from 1949 depicting a man labelled 'Wall Street' offering a hook disguised as a worm to a fish labelled 'Western Europe'. The hook is attached to a chain labelled 'Marshall Plan'. Question: What is the message of Source A? (2 marks)
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A 2-mark answer requires identification of the message with supporting details from the source.
Source C: An extract from a public speech by US President Harry Truman in 1947. He states that the US must support 'free peoples who are resisting attempted subjugation by armed minorities or by outside pressures,' framing it as a global struggle between democracy and totalitarianism.
Source D: An extract from a 1947 article in the Soviet newspaper Pravda. It describes American policy as 'imperialist expansion' and accuses the US of using economic aid to make other nations politically dependent, creating a 'new American empire'.
Question: Compare and contrast what Sources C and D reveal about the emerging Cold War. (6 marks)
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A 6-mark answer requires a running comparison with specific evidence from both sources.
How it all connects
The big idea sits in the middle — tap a linked idea to explore the link.
Tap a linked idea to see how it connects back to the main topic — that connection is what examiners reward.
Glossary
Try to recall each definition before you reveal it.
Quick check
Answer in your head first — then tap to check. No pressure.
Revision flashcards
Flip the card. Test yourself before the exam.
What is 'Provenance' in source analysis?
The provenance of a source refers to the information about its origin. This includes the author/creator, the date and place of creation, and the type of source it is (e.g., diary, speech, cartoon). It's the starting point for any analysis.
Key takeaways
Review these before you close the topic — retrieval beats re-reading.
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Question 1: A comprehension question on one source (e.g., 'According to Source A...'). (3 marks)
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Question 2: An analysis question on one source, often a visual one (e.g., 'What is the message of Source C?'). (2 marks)
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Question 3: A comparison and contrast question on two sources (e.g., 'Compare and contrast what Sources B and D reveal...'). (6 marks)
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Question 4: A 'mini-essay' requiring you to use all the sources and your own knowledge to evaluate a historical claim. (9 marks)
Practice — then mark it
The whole point: a real Cambridge question, marked mark-by-mark.
Practice Paper 1 Skills
Practice Paper 1 Skills
Extra simulations & links
PhET, GeoGebra and other curated tools — open in a new tab.
Frequently asked
Checkpoint
One marked question is worth ten re-reads — close the loop before you move on.
Reading it isn’t knowing it — prove it.
Before you move on: do Practice Paper 1 Skills on paper, snap a photo, and get examiner-style feedback on exactly where you win and lose marks.