Claim, Evidence, Reasoning in Science

Claim, Evidence, Reasoning in Science

Read each question carefully. For each scenario, you will make a CLAIM, provide EVIDENCE to support your claim, and explain your REASONING.

What is CER?

CLAIM: A statement or conclusion that answers a question.

EVIDENCE: Scientific data that supports the claim. This can be observations, measurements, or facts.

REASONING: The explanation of why the evidence supports the claim. It shows the connection between the claim and the evidence.

Scenario: Two plants were given different amounts of water. Plant A received water every day. Plant B received water once a week. After two weeks, Plant A grew 5 inches, and Plant B grew 1 inch.

Question: Which plant grew taller because it received more water?

Claim:

Evidence:

Reasoning:

Scenario: You place a small rock and a small piece of wood into a bucket of water. The rock sinks to the bottom, and the wood floats on top.

Question: Why did the wood float and the rock sink?

Claim:

Evidence:

Reasoning:

Scenario: A polar bear has thick fur and a layer of blubber. A desert fox has large ears and thin fur. Polar bears live in cold, icy places. Desert foxes live in hot, dry places.

Question: How are these animals adapted to their environments?

Claim:

Evidence:

Reasoning:

The scientific method often involves making observations, asking questions, forming hypotheses, and then using evidence to support or refute those hypotheses. This is where Claim, Evidence, Reasoning comes in!