Perimeter (age 10+)
Your child knows shapes with the same area can have different perimeters. With 12 tiles, they can make rectangles of different shapes.
In curriculum terms
Recognise that shapes with the same area can have different perimeters and vice versa; explore this relationship systematically
Ages are typical, not deadlines — follow your child’s pace. How to help at home →
How to tell they’ve got it
Tick these off as you see them — no test required.
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Try this together
If your child has 12 square tiles to arrange, can they make different-shaped rectangles and notice that the area stays the same (12 tiles) but the perimeters are all different?
Where this sits on the map
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Curriculum alignment
Where this fits in the official school curriculum — our best automated guess, not yet checked by a person.
Show candidate curriculum codes · 3 ACARA · 2 NSW · 3 VIC
Australian Curriculum v9 candidate
solve practical problems involving the perimeter and area of regular and irregular shapes using appropriate metric units
recognise ways of measuring and approximating the perimeter and area of shapes and enclosed spaces, using appropriate formal and informal units
establish the formula for the area of a rectangle and use it to solve practical problems
NSW syllabus codes & stages only
Victorian Curriculum 2.0 codes & levels only
These are candidate alignments generated by semantic matching — machine-suggested and unreviewed (v0.1), not official or verified mappings. For official curriculum content see australiancurriculum.edu.au, curriculum.nsw.edu.au and f10.vcaa.vic.edu.au. Don’t rely on them for registration or compliance purposes.