Claim, Evidence, Reasoning (CER) in Science
A Grade 7 science worksheet to practice identifying and constructing scientific claims, evidence, and reasoning.
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Claim, Evidence, Reasoning (CER) in Science
Name:
Date:
Score:
Read each scenario carefully and identify the Claim, Evidence, and Reasoning. For some questions, you will need to construct your own CER statement.
What is CER?
Claim: A statement or conclusion that answers the original question/problem.
Evidence: Scientific data that supports the claim. This can be observations, measurements, facts, or data from experiments.
Reasoning: The explanation of why the evidence supports the claim. It connects the evidence to the claim and often includes scientific principles or theories.
Scenario 1: A plant was grown in a dark room for a week. After a week, its leaves were yellow and it looked wilted. A similar plant grown in sunlight had green leaves and stood upright.
1. Claim:
2. Evidence:
3. Reasoning:
Scenario 2: When a metal spoon is placed in a cup of hot water, the handle of the spoon also gets hot over time.
Claim: Heat is transferred through the spoon by .
Evidence: The of the spoon gets hot after being placed in hot water.
Reasoning: Metals are good , allowing thermal energy to move from the hotter end to the cooler end through .
1. A claim must always be supported by personal opinions.
True
False
2. Evidence should be specific data and observations.
True
False
Question: Why does a ball thrown upwards eventually fall back to the ground?
Claim:
Evidence:
Reasoning: