Writing CER Paragraphs: A Step-by-Step Guide for Middle Schoolers

CER structures—Claim, Evidence, Reasoning—anchor scientific argumentation and creeping into ELA argumentative expectations. Teach the rhythm before polish.

Claim

One sharply scoped sentence answering the prompt—avoid sprawling theses prematurely.

Evidence

Quoted data, excerpted textual detail, observable measurement—paired with citations when required—not inference smuggled as fact.

Reasoning

Explicit bridging: explain how evidence supports claim referencing mechanism or textual logic—not restating louder.

Mini-scaffold rehearsal

1. Underline prompt verbs—“support,” “explain,” “refute.”
2. Highlight candidate evidence passages before drafting.
3. Sentence frames: “Because… demonstrates…”—then delete scaffolds if redundant.

Frequent slips

• Dumping unrelated quotes.
• Evidence without interpretation.
• Claims too broad—split across paragraphs.

Cross-links

Polish drafts with our revision checklist; strengthen grammar sparingly (balanced grammar drills).

Use TutorLucid thoughtfully

Writing coach fosters student-owned iteration—difference from ghostwriting delineated (AI writing ethics).

Expand science writing via lab report skeleton.

Explore the full TutorLucid blog for homework tips, parent guides, subject deep dives, and AI in education.