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3-D shapes (age 9+)

CONCEPTUAL
Mathematics›Geometry|Ages 9—10|ID: mt_wUSbRt3-qw

Identify 3-D shapes, including cubes and other cuboids, from 2-D representations

Mastery Evidence

  • Identify a cuboid from its net
  • Name the 3-D shape shown in an isometric drawing
  • Match 2-D representations to the correct 3-D shape

Assessment Prompt

“If you show [child] a flat architect's sketch of a box or a pyramid, can they tell you the name of the 3-D shape it represents?”

Prerequisites2

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  • 2-D shapes (age 7+) hard

    Y3 drawing 2D and making 3D shapes is prerequisite to identifying 3D from 2D representations

    • Edges, vertices, and faces hard

      Making/describing 3-D shapes requires knowing their properties (edges, vertices, faces)

      • 3-D shapes hard

        Describing 3-D properties (edges, vertices, faces) requires knowing the shapes first

      • Nets of 3-D Shapes soft

        Counting edges, vertices, and faces is reinforced by analysing nets where each face is visible as a separate 2-D shape

      • 3-D shapes (age 5+) hard

        Formal property description extends informal analysis 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 (age 6+) hard

      Drawing 2-D shapes requires knowing their properties

      • 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

    • Nets of 3-D Shapes soft

      Drawing 2-D shapes and making 3-D shapes from materials is supported by being able to sketch and interpret nets

  • Nets of 3-D Shapes hard

    Identifying 3-D shapes from 2-D representations requires understanding the relationship between a net and its solid

Unlocks3