Students working on science tasks are increasingly arriving with confident explanations they cannot verify. The writing sounds accurate. The vocabulary is appropriate. But when asked where a claim came from, students point to a tool rather than an observation, a diagram, or a class text. The confidence of the output is outrunning the quality of the thinking behind it. This matters most in science, where a claim that sounds right can still be wrong in ways that matter.
The move — Verification Slip
A half-page slip attached to any science writing task. Three prompts, ten minutes, one thinking habit built.
At the end of a science writing task, give each student a half-page slip with three prompts: One claim I am making / How I checked it / One thing that might not be true if...
Students identify one sentence in their writing that makes a scientific claim. They highlight or underline it, then copy it onto the slip in their own words.
Students check that claim against one class-approved source — a diagram on the wall, a sentence from the class booklet, a shared observation record, or a labelled sketch from an experiment. They write where they found their check in plain language.
Students complete the third prompt: one condition under which their claim might not hold. "This might not be true if the soil is different" or "This might change if the temperature is very cold" are exactly right for this year band.
The slip is stapled to the writing and collected with it. It is part of the submission, not an optional extra.
What the student produces
A completed Verification Slip alongside their science writing: a specific claim in the student's own words, a named check against a class-approved source, and one condition of uncertainty. The teacher can read the slip independently of the writing and assess whether the student understands what they claimed and what kind of evidence supports it.
Why it holds up
The Verification Slip requires students to do three things that confident-sounding output cannot do for them: identify a specific claim as a claim, trace it to a source they can point to, and name a condition under which it might fail. Each of these is a distinct thinking act. A student who completes the slip has demonstrated engagement with the evidence, not only the product.
Teacher judgement note
For students who are still developing written fluency, the slip can be completed orally with the teacher scribing, or as a brief conversation recorded as a teacher note alongside the submission.
Governance reminder
Agree a consistent verification language across your science team. When students hear "one claim, one check, one limit" across year levels, the habit builds faster. Brief the team: the slip is assessed alongside the work, not as an add-on.
NZ Curriculum connection: Science — Nature of Science; Communicating in science; Understanding about science
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