Claim, Evidence, Reasoning in Science
A Grade 3 science worksheet introducing students to the Claim, Evidence, Reasoning (CER) framework through engaging questions and scenarios.
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Topics
Claim, Evidence, Reasoning in Science
Name:
Date:
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Read each question carefully. For each scenario, identify the Claim, the Evidence, and the Reasoning. Remember: • A **Claim** is what you think you know. • **Evidence** is why you think you know it (facts, observations). • **Reasoning** is how your evidence supports your claim (the rule or scientific principle).
1. Sarah left her ice cream cone outside on a hot sunny day. After 5 minutes, the ice cream started to melt and drip. What is the claim, evidence, and reasoning?
Claim:
Evidence:
Reasoning:
2. Maria planted two seeds. One seed was watered every day, and the other was not watered at all. After a week, the watered seed grew into a small sprout, but the unwatered seed did not change. What is the claim, evidence, and reasoning?
Claim:
Evidence:
Reasoning:
3. David filled his bird feeder with birdseed. The next morning, he saw many birds eating from the feeder. He noticed that the birds had different colored feathers and sang different songs. What is the claim, evidence, and reasoning?
Claim:
Evidence:
Reasoning:
4. Which of the following is the BEST example of evidence?
I think the sky is blue.
The sky looks blue today.
I observed that the sky is blue.
The sky is blue because it reflects the ocean.
5. What is the purpose of 'Reasoning' in CER?
To state your answer.
To give facts and observations.
To explain how your evidence supports your claim.
To ask a question.
6. A claim is always a question.
True
False
7. Evidence is the observations you make.
True
False