AC9M5M02 • Year 5 Maths

Perimeter and Area of Regular and Irregular Shapes (AC9M5M02)

solve practical problems involving the perimeter and area of regular and irregular shapes using appropriate metric units

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Unit focus

  • Students distinguish boundary length from surface coverage, calculate regular shapes, decompose composite regions and approximate irregular spaces with stated assumptions and metric units.
  • Use this routine: Represent → Reason → Calculate → Interpret → Verify.
  • Watch for interior grid lines included in perimeter: Trace only the external boundary.
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