Which Attribute Matters? is a free printable Grade 1 maths worksheet on distinguishing defining from non-defining attributes, aligned to Common Core standard 1.G.A.1. It prints 6 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two pupils in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.
Set 23 of 25 · the same problems every time you open this link.
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How many sides does each shape have?
LessonPrint · 1.G.A.1 · Set 23 · free to copy for classroom use
Set 23. Prints on its own sheet.
Last reviewed 2026-09-05. Aligned to 1.G.A.1 of the Common Core State Standards for mathematics.