Help your learners master one of the most important skills in science: building strong, evidence-based explanations! This colourful, student-friendly Claim–Evidence–Reasoning (CER) Worksheet guides children through the full process of scientific thinking — from forming a clear claim to backing it up with solid evidence and well-structured reasoning.
Designed with clean, accessible sections (as seen on page 1), the worksheet includes dedicated spaces for:
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Science Question – frame the investigation clearly
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Claim – write a focused answer to the question
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Evidence – record scientific facts, observations, or data
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Reasoning – connect the evidence logically to the claim
Perfect for experiments, inquiry tasks, science fair projects, assessment for learning, homework, or revision. This resource supports scientific literacy, critical thinking, and structured writing across KS1–KS3 and home education settings.
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