Claim, Evidence, Reasoning: Free Classroom Lesson
Teach your students how to master CER with this engaging, ready-to-use resource—completely free.
In this one-period lesson, students analyze, evaluate, and build arguments using the Claim, Evidence, and Reasoning framework. From Typhoid Mary’s story to modern environmental issues, they’ll see how strong arguments are constructed—and practice making their own.
 
Audience
Middle & High School Students
 
What Students Will Do
Analyze a well-constructed CER using the story of Typhoid Mary.
Break down a weaker version of the same story told without a clear argument.
Create their own CER based on a high-interest environmental issue.
 
What’s Included
Printable worksheet and reading passages.
A simple rubric for guided evaluation.
Real-world prompts to spark critical thinking.
 
Estimated Duration
1 class period (45–50 minutes)
 
Standards Alignment
Aligned to the NCSS C3 Framework for Social Studies.