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Writing

Claim, Evidence, Reasoning: What You Need to Know

Claim, Evidence, Reasoning: What You Need to Know

Has an instructional coach or administrator told you to start using a claim, evidence, and reasoning (or C-E-R) framework for writing in your classroom?

Maybe you need to closely adhere to the Common Core State Standards but aren’t quite sure where to begin.

If you’re like me, your whole school may be committing to using a C-E-R language in all classes to build consistency and teacher equity for students.

Regardless, here you are wondering, what the heck is claim, evidence, and reasoning anyway? In this post, I aim to break it down for you.

There are plenty of science examples out there, but that is not my specialty. For this post, I’ll focus on my subject area, high school English, but know that the C-E-R framework can be applied to multiple content areas. 

If you’d like to teach the C-E-R writing framework to your students, I have a whole bundle of resources right here.

Claim, Evidence, Writing or C-E-R Writing: What You Need to Know Pinterest Pin

C-E-R Writing Overview

C-E-R writing is a framework that consists of three parts: Claim, Evidence, and Reasoning. Science classes use it frequently, but it works well in any content area. In fact, my entire school uses it–down to the gym classes!

The cover image for the Teachers Pay Teachers product by It's Lit Teaching: FREE C-E-R (claim, evidence, and reasoning) writing handout
Need a quick reference guide to claim, evidence, and reasoning? Grab my FREE printable guide from Teachers Pay Teachers. This printable breaks down C-E-R writing for your students at a glance.

A C-E-R writing framework works especially well for teachers adhering to the Common Core State Standards. The words “claim”, “evidence”, and “reasoning” are directly from the standards themselves. 

C-E-R writing works especially well for argumentative or persuasive writing, but also holds true for research-based writing.

Note that these are academic forms of writing. You wouldn’t, for instance, probably use claims, evidence, or reasoning in a creative writing class or with a narrative or poetry unit.

While C-E-R may seem formulaic at first, it does come from a natural flow of solid arguments. Any attempt at persuasion must take a stance, support it with logic, and make a case.

The formulaic nature of C-E-R writing makes it a helpful writing scaffold for students who struggle to organize their ideas or generate them in the first place.

Claim, Evidence, Writing or C-E-R Writing: What You Need to Know Pinterest Pin

Claim

The claim sets the tone for the rest of the writing.

It is the argument, the stance, or the main idea of the writing that is to follow. Some may say that in C-E-R writing, the claim is the most important piece.

I have found that the placement and length of the claim will vary according to the length of the writing. 

Cover for the Teachers Pay Teachers product by It's Lit Teaching: Task Cards for Claim Practice. This is for students to practice claim as part of C-E-R or claim, evidence, and reasoning writing.
Do your students need some extra practice with understanding claims? These 24 task cards ask students to identify, evaluate, and create claims–a perfect introductory activity! Get it here!

For a paragraph, I feel the claim makes a great topic sentence and thus, should be the first sentence. The body of the paragraph then will aim to support the topic sentence (or claim).

In a standard five-paragraph essay, the first introductory paragraph may build to the claim: the thesis. The body paragraphs then will each contain a sub-claim so-to-speak that supports the overarching claim or thesis.

Claims, while logical, should present an arguable stance on a topic. 

I often have to remind my students that if they are writing in response to a question, restating the question in the form of a sentence and adding their answer is an easy way to write a claim.

A Claim Example for an English Class

Let’s use a Shakespearian example. A popular essay topic when reading Romeo and Juliet poses the following question: who is to blame for the deaths of Romeo and Juliet?

A claim that answers this question might read:

“Friar Laurence is most to blame for Romeo and Juliet’s deaths.”

This claim is strong for multiple reasons. First, it is direct. There’s no question about what the rest of the writing will be about or will be attempting to support. Second, this claim is arguable–not provable–but also logical. The idea can be supported by examples from the text. 

A claim is not a fact. Evidence should support it, which we’ll discuss in a moment, but ultimately, it should not be something that can be proven. 

An infographic explaining C-E-R writing including why to use it, and an overview of claim, evidence, and reasoning

Evidence

The next step in the C-E-R writing framework is evidence.

Evidence is the logic, proof, or support that you have for your claim. I mentioned earlier that your claim, while arguable, should be rooted in logic. Evidence is where you present the logic you used to arrive at your claim.

Cover for the Teachers Pay Teachers product by It's Lit Teaching: Evidence Task Cards. This is part of a set of claims, evidence, and reasoning or C-E-R writing resources.
Evidence seems easy, but students always struggle with it! Provide them some extra practice with these evidence task cards.

This can take a variety of forms: research, facts, observations, lab experiments, or even quotes from interviews or authorities. 

For literary analysis, evidence should generally be textual in nature.

That is, the evidence should be rooted–if not directly quoted from–in the text. For example, the writer may want to use quotes, paraphrasing, or a summary of events from the text. 

I encourage my students to use word-for-word textual evidence quoted and cited from the text directly. This creates evidence with which it is difficult to argue. 

An Evidence Example for an English Class

If we continue with the Romeo and Juliet example, we could support our previous claim that Friar Laurence is most to blame for the couple’s death by presenting several pieces of evidence from the play.

Our evidence may then read as follows:

“In the play, Friar Laurence says to Juliet, ‘Take thou this vial, being then in bed/ And this distilled liquor drink thou off;/ …The roses in thy lips and cheeks shall fade/ … And in this borrow’d likeness of shrunk death/ Thou shalt continue two and forty hours,/And then awake as from a pleasant sleep’ (4.1.93-106).”

This is strong evidence because the text proves it. This quote comes directly from Shakespeare; you can’t argue with it.

It is also on-topic. it shows a piece of the play that supports the idea that Friar Laurence is most to blame for Romeo and Juliet’s deaths. 

For claim, evidence, and reasoning writing, the strength of the argument depends on its evidence. 

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Reasoning

Reasoning is the thinking behind the evidence that led to the claim. It should explain the evidence if necessary, and then connect it to the claim.

Cover for the Teachers Pay Teachers product by It's Lit Teaching: Reasoning Task Cards. This is part of a series of claim, evidence, and reasoning or C-E-R writing resources available.
Students often struggle with what to say in their reasoning. These task cards help emphasize the importance of transitions and adding explanations and analysis to one’s arguments. Grab it from my store and let your students grapple with this skill!

In a one paragraph response, I usually recommend that students break down their reasoning into three sentences:

Personally, this is where my students struggle the most. They have a hard time understanding how to explain the evidence or connect it to their claim because it’s obvious to them.

  • Explain or summarize the evidence that was just used
  • Explain or show how this evidence supports the claim
  • Finish with a conclusion sentence

If your students, like mine, struggle with crafting reasoning, I recommend giving them sentence starters like “This shows that…” or “This quote proves that….”

I also go over different ways to approach writing conclusion sentences, as my students often struggle in ending their writing.

(If you’d like help breaking this down for your students, my C-E-R Slideshow covers reasoning–including what to include and three different ways to write a conclusion sentence.)

A Reasoning Example for An English Class

For our Romeo and Juliet example, it may read something like this:

“This quote shows that Friar Laurence is the originator of the plan for the two lovers to fake their deaths. Had he not posed this plan, Romeo could not have mistaken Juliet for dead. Thus, he would never have committed suicide, nor Juliet. As the adult in the situation, Friar Laurence should have acted less rashly and helped the couple find a more suitable solution to their problems.”

This reasoning is strong for several reasons.

First, note the transition in the beginning. It discusses the textual evidence–the quote presented earlier–directly and explains what is happening in the quote.

Next, it walks the reader step-by-step through the writer’s rationale about the evidence that led her to believe the claim. Even if the reader does not agree with the reader’s claim, he or she must concede that the writer has a point. 

You may have noticed that in this example, the reasoning tends to be longer than either the claim or the evidence. The length of the reasoning will vary according to the assignment, but I have found that good reasoning does tend to be the bulk of C-E-R writing. 

Claim, Evidence, Writing or C-E-R Writing: What You Need to Know Pinterest Pin

Get Started with Claim, Evidence, and Reasoning Today!

And there you have it! An overview of the C-E-R writing framework. No doubt, you can see how this framework can easily be applied to a myriad of assignments in any content area. 

If you need help getting started in using the C-E-R writing framework in your English class, I have a few resources in my Teachers Pay Teachers store that can help you. Check them out! Start with a FREE student guide to claim, evidence, and reasoning!

Photo of It's Lit Teaching's claim, evidence, and reasoning free student handout. It is a guide to C-E-R writing at a glance.
Click for a FREE download of this student resource!


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About Heather

About Heather

I’m a full-time high school English teacher, caffeine addict, greyhound mom, and wife-to-be! Life keeps me busy but I LOVE helping other teachers!

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