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Curved or Straight? is a free printable Kindergarten maths worksheet on classifying by edge type, aligned to Common Core standard K.G.B.4. It prints 5 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 12 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Curved or Straight?

K.G.B.4

NameDate

Sort each one into the right box.

1.Sort each one into the right box.

Sort: circle, pentagon, oval, sphere

CurvedStraight
2.Sort each one into the right box.

Sort: hexagon, circle, cylinder, cube

CurvedStraight
3.Sort each one into the right box.

Sort: pentagon, circle, cone, oval

CurvedStraight
4.Sort each one into the right box.

Sort: triangle, cylinder, pentagon, oval

CurvedStraight
5.Sort each one into the right box.

Sort: pentagon, sphere, circle, hexagon

CurvedStraight

LessonPrint · K.G.B.4 · Set 12 · free to copy for classroom use

Answer key — Curved or Straight?

Set 12. Prints on its own sheet.

  1. 1.Curved: circle, oval, sphere; Straight: pentagon
  2. 2.Curved: circle, cylinder; Straight: hexagon, cube
  3. 3.Curved: circle, cone, oval; Straight: pentagon
  4. 4.Curved: cylinder, oval; Straight: triangle, pentagon
  5. 5.Curved: sphere, circle; Straight: pentagon, hexagon

Last reviewed 2026-09-05. Aligned to K.G.B.4 of the Common Core State Standards for mathematics.