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2-D shapes (age 6+)

CONCEPTUAL
Mathematics›Geometry|Ages 6—7|ID: mt_sBcRdUfAzV

Identify and describe properties of 2-D shapes including the number of sides and line symmetry in a vertical line

Mastery Evidence

  • Count the number of sides of a given 2-D shape
  • Identify whether a 2-D shape has a vertical line of symmetry
  • Use properties (number of sides, symmetry) to describe and distinguish between shapes

Assessment Prompt

“Can [child] count the sides of a shape and say whether it has a line of symmetry — for example, knowing that a rectangle is symmetrical but a scalene triangle is not?”

Curriculum Standards1 alignment

Maths/Y2/GPS/1The national curriculum in England
Identify properties of 2-D shapes

Identify and describe the properties of 2-D shapes, including the number of sides and line symmetry in a vertical line.

Mathematics · Key Stage 1

Prerequisites3

Show full prerequisite tree
  • Angles in triangles (age 6+) soft

    Understanding defining attributes supports describing shape properties formally

    • 2-D shapes hard

      Distinguishing defining vs non-defining attributes requires knowing common 2-D shape names first

    • 3-D shapes (age 5+) hard

      Identifying defining attributes builds on informal analysis and comparison of shapes

      • 2-D shapes hard

        Analysing and comparing shapes requires being able to name them first

      • 3-D shapes hard

        Analysing 3-D shapes requires recognising and naming them

  • 2-D shapes hard

    Describing properties of 2-D shapes (sides, symmetry) requires knowing the shapes first

  • 3-D shapes (age 5+) hard

    Formal property description extends informal analysis of sides and vertices

    • 2-D shapes hard

      Analysing and comparing shapes requires being able to name them first

    • 3-D shapes hard

      Analysing 3-D shapes requires recognising and naming them

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