8th Grade CER History Detective - WWII
Historians don’t just tell what happened — they explain why and how it happened, using facts to back up their ideas. The structure we use to do this is Claim–Evidence–Reasoning (CER):
- Claim: A statement that answers the question.
- Evidence: Facts, examples, or data that support the claim.
- Reasoning: The explanation that links the evidence to the claim and shows why it matters.
Today, you’ll review CER through a simple example, then identify and write each part. Finally, you’ll use CER to answer a historical question from our unit. Follow the instructions in each section.
Group 1
Below is an example CER about weather. Use it to help answer the questions.
Source 1.1
"Prompt: What weather event do you think happened last night?"
Claim: A statement that answers a question.
Example: It rained last night.
Evidence: Facts or clues that support your claim.
- The ground is wet
- the puddles are full
- leaves are sticking to the sidewalk
Reasoning: Explain how the evidence proves your claim.
- Rain would make the ground wet and cause puddles to form.
- It can also make leaves stick to the ground because of the water.
- These clues all point to rainfall as the cause.
Full Answer:
I think it rained last night. When I look outside the ground is wet, the puddles are full, and leaves are sticking to the sidewalk. Rain would make the ground wet causing puddles to form. It can also make the leaves stick to the ground because of the water.
Question 1a
Which sentence is the claim in the example?
Question 1b
Which sentence is the evidence in the example?
Question 1c
Which sentence is the reasoning in the example?
Group 2
Match each piece of evidence to the correct reasoning. Choose the best match for each.
Question 2a
Evidence: Leaves are sticking to the road.
Which reasoning fits this evidence best?
Question 2b
Evidence: The puddles are full.
Which reasoning fits this evidence best?
Question 2c
Evidence: The streets are wet.
Which reasoning fits this evidence best?
Group 3
Review the definitions below and answer the questions.
Question 3a
Which definition best describes a Claim?
Question 3b
Which definition best describes Evidence?
Question 3c
Which definition best describes Reasoning?
Group 4
You find a soldier’s duffel bag containing: a wool military coat, a canteen, ration tins, a photograph of a family dated 1943, a folded American flag patch, and a train ticket to New York City.
Question: Where is this person most likely going, and for what purpose?
Write your answer as a Claim only.
Question 4a
Write a claim that answers the question: Where is this person most likely going, and for what purpose?
Group 5
Review the items in the duffel bag: a wool military coat, a canteen, ration tins, a photograph of a family dated 1943, a folded American flag patch, and a train ticket to New York City.
Question: Which 2–3 items from the duffel bag best support your claim? List them as your Evidence.
Question 5a
List 2–3 items from the duffel bag that best support your claim.
Group 6
Review your claim and evidence from the Mystery Bag scenario.
Question: Explain how the specific items you listed support your claim. Write your Reasoning.
Question 6a
Explain how the items you listed as evidence support your claim.
Question 6b
Write a CER paragraph about where the person was going and why you think that.
Source 6b.1
Now, combine your Claim, Evidence, and Reasoning from the mystery backpack into one paragraph. Use sentence starters like:
- I think...
- because...
- For example...
- This shows that...
Group 7
Read the passage about life on the American home front during WWII. Use information from the text to answer the extended response question.
Source 7.1
During World War II, life on the American home front changed dramatically. Factories that once made cars, refrigerators, and other consumer goods were quickly converted to produce tanks, airplanes, and weapons for the military. This shift in production meant that many everyday items became scarce, and Americans were encouraged to conserve and recycle materials like rubber, metal, and paper. The government introduced rationing programs, limiting how much sugar, meat, gasoline, and other goods people could buy each week. Citizens received ration books with stamps that allowed them to purchase limited amounts of these items.
Women played a crucial role in the war effort, stepping into jobs that had previously been held by men who were now serving in the military. Images of "Rosie the Riveter" became popular, symbolizing the strength and importance of women working in factories, shipyards, and offices. Children and families planted "victory gardens" in their yards and public spaces to grow their own fruits and vegetables, helping to supplement the food supply.
Patriotism was high, and the government used posters, radio programs, and movies to encourage Americans to support the war. People bought war bonds, participated in scrap drives, and found creative ways to deal with shortages and sacrifices. Despite the challenges, many Americans felt a sense of unity and purpose, believing their efforts at home were just as important as those of the soldiers overseas.
Generated for classroom use based on standard U.S. history sources.
Question 7a
Using your knowledge of U.S. history and evidence from the text, explain how the home front during World War II changed everyday life in America. Make a claim, support it with at least two pieces of evidence from the text, and explain how your evidence supports your claim.
Group 8
Think about the Mystery Bag and the WWII home front question. Reflect on how using CER helped you understand the topic.
Question 8a
How did applying CER in a historical context help you understand the topic better?
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