Scientific Method CER Activities Claim Evidence Reasoning Science

Claim, evidence and reasoning practice across eight short science data sets, from plant growth and ice melting to heart rate and density, plus an open-ended challenge to design an experiment.
Grades
Grades 4–5
Pages
11
File type
PDF
Answer key
Included

Updated Oct 26, 2026

Subject
Basic Science, Formal Writing, Writing, Science, ELA
Topic
Claim Evidence Reasoning, Cer Activities
Resource types
Writing Prompts
Answer key
Included

From the author

About this resource

🧪 Use interesting science experiments and data analysis exercises to help students grasp Claim, Evidence, and Reasoning (CER)!
This resource teaches students to think like scientists, evaluate the evidence, and use scientific reasoning to support their conclusions. It has eight organized CER situations as well as an open-ended task.
Ideal for STEM classes, science centres, homework, exam preparation, critical thinking exercises, and science instruction.

Includes:

✅ CER Introduction Page

✅ 8 Science CER Activities

✅ Data Analysis Practice

✅ Scientific Method Connections

✅ Open-Ended CER Challenge

✅ Complete Answer Key

Skills Covered:

  • Claim Evidence Reasoning

  • Scientific Inquiry

  • Data Analysis

  • Critical Thinking

  • Science Literacy

  • Scientific Method

  • STEM Skills

Recommended for Grades 4–6.

TAGS

claim evidence reasoning

cer activities

cer science

science worksheets

scientific method

science inquiry

critical thinking

science literacy

science centres

science activities

middle school science

data analysis

stem activities

grades 4 5 6

Ideal for educators seeking stimulating science reading comprehension exercises that integrate literacy, inquiry, and critical thinking into a single, user-friendly tool!

In the classroom

Teaching tips & learning objectives

Learning objectives

  • Write a claim supported by evidence from a small data set

  • Explain the reasoning that connects evidence to a claim

  • Design a simple experiment for an open-ended question

Skills covered

  • Reading data — students pull evidence from plant heights, heart rates and other short data sets

  • Writing CER responses — students state a claim, cite evidence and explain their reasoning for each scenario

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