Claim Evidence Reasoning Unit | CER

Teaching Muse
Grade Levels
5th - 7th, Homeschool
Formats Included
  • Zip
  • Google Apps™
36 pages, digital portion, plus answer key
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Includes Google Apps™
This bundle contains one or more resources with Google apps (e.g. docs, slides, etc.).


Introduce and reinforce the CER strategy with your science students using the bundle of print and digital materials. These lessons will walk you through introducing the claim, evidence, and reasoning method to your students to help clarify, think critically, and explain their scientific reasoning to demonstrate their knowledge of the concepts learned.

Students will be able to:

  • Demonstrate their knowledge of scientific principles through crafted writing responses
  • Utilize the claim, evidence, reasoning formula to summarize their understanding of science activities, classroom discussions, and real-life scenarios
  • Identify a claim based on watching a video or reading a short passage
  • Support their claim with evidence based on observations from a video or details from the reading passage
  • Explain their thinking in written form through scientific reasoning

This CER activity bundle includes:

  • Teacher tips pages: An explanation of how to implement this writing strategy in your science classroom. It also includes Youtube video links to 4 activities to practice with your students.
  • Directions to print 8.5" x 11" letter-sized posters to a larger size
  • Classroom poster: Claim, evidence, reasoning poster (sized at 18" x 24")
  • Scaffolded posters: Various posters sized at 8.5" x 11" which include the terms claim, evidence, reasoning as well as definition and examples
  • Formula poster: Sized at 8.5" x 11" will walk students through writing a thorough response
  • Student reference sheets: Perfect to put in a student science notebook
  • Student graphic organizer: Use with students as they are learning about the strategy or hand out to struggling students who need a differentiated approach
  • Digital Notebook: The Google Slide version of printable sheets includes practice examples. Yes, this can be distributed through your secure learning management system such as Google Classroom, Schoology, SeeSaw, etc.
  • Practice worksheets: Student response graphic organizers or worksheets. This activity now includes a digital companion.
  • Rubric: Assess student responses using the rubric
  • Answer key

This CER claim, evidence, reasoning unit will help your NGSS aligned units.

The following materials are included in this CER Claim, Evidence, Reasoning bundle:

Feedback from teachers:

  • I used this resource throughout the year to teach the method of explaining scientific findings using the CER approach. At the beginning of the year, it was something we needed to review a lot, but by the end, the students got much better at creating direct, specific claims, supporting those claims with evidence from their investigations, and reasoning why their evidence supported their claims. This resource makes it clear and easy to follow the prompts.
  • This was a fun and enjoyable way to practice claim, evidence, and reasoning for my 5th graders! They really got into it and came up with great ideas. Thank you for the resource!
  • We did the ones with the videos, and my students absolutely LOVED these! We used them for CER, and my students did really well on their assignments because they could connect the videos. We did a couple of the others without the videos, too, and my students did well with these assignments too. I really love how you put these together! Thank you so much!
  • My students have been doing work with CER using still pictures. Using this product, I was able to take it a step further with the commercials and then with written paragraphs. It was great not having to search the internet for a bunch of things.

Science units you might be interested in:

Kindly Note: If you have questions, do not hesitate to email me at Teaching Muse Email



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Total Pages
36 pages, digital portion, plus answer key
Answer Key
Included with rubric
Teaching Duration
Lifelong tool
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to see state-specific standards (only available in the US).
Cite specific textual evidence to support analysis of science and technical texts.
Determine the central ideas or conclusions of a text; provide an accurate summary of the text distinct from prior knowledge or opinions.
Distinguish among facts, reasoned judgment based on research findings, and speculation in a text.
By the end of grade 8, read and comprehend science/technical texts in the grades 6–8 text complexity band independently and proficiently.
Write arguments focused on discipline-specific content.


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