Students have an evidence strategy. The problem is they only have one.

THE PROBLEM

Upper elementary students support their claims consistently, using the only evidence strategy most of them have: personal experience and personal opinion. They cannot distinguish between a reason that depends on the reader already agreeing and a reason that would persuade a skeptical reader who does not. The gap is not missing information. It is a missing process for selecting and connecting evidence to a specific claim.

WHAT EVIDENCE ACTUALLY REQUIRES

Selection. Identifying information relevant to the specific claim, not just information the writer knows about the general topic.

Connection. Explicitly linking the evidence to the claim. The connection is the argument. A student who cites evidence and assumes the connection is obvious has not made one.

Evaluation. Recognizing that a personal story and an expert’s finding carry different persuasive weight. This distinction is teachable at grades 4 and 5.

THE THREE EVIDENCE FAILURES

Unsupported assertion. The student states a claim and moves on. No evidence offered.

Personal opinion as evidence. Support is personal reaction or preference. Depends entirely on reader sympathy rather than verifiable information.

Disconnected evidence. The student provides information related to the topic without connecting it to the specific claim.

WHAT THE RESEARCH SAYS

National Writing Project: students who receive explicit instruction in evidence selection and explanation outperform those who receive only “support your ideas” prompts. Graham & Perin, Writing Next (2007): explicit strategy instruction in evidence use is a high-effect practice at every level, including elementary.

PRACTICAL STARTING POINTS
  • 1. Teach “This shows that...” before any argument assignment. Forces students to articulate the connection between evidence and claim. Without the frame, they cite and move on.
  • 2. Sort evidence by type before writing. Personal experience, personal observation, text fact, expert view. The sorting makes the hierarchy visible without a lecture.
  • 3. Model evidence selection for a specific claim. Present two pieces of evidence. Ask which actually supports the specific claim. The discussion surfaces the difference.
  • 4. Require one non-personal piece of evidence per piece. Forces reach beyond personal experience and makes the distinction between personal and external support a concrete expectation.

Sources: National Writing Project, Because Writing Matters (2006); Graham & Perin, Writing Next (2007); NAEP Writing Data, NCES | guidedscholar.ai | © 2026 Brau Consulting LLC