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Length and perimeter: measuring, comparing and calculating

This guide provides a sequence of steps for exploring length and perimeter using metric standard units of millimetres, centimetres and metres. Tasks embed reasoning and problem-solving opportunities.

Additional details
Year level(s)	Year 3, Year 4, Year 5
Audience	Teacher
Purpose	Teaching resource, Teaching strategies
Format	Downloadable resources
Teaching strategies and pedagogical approaches	Questioning, Explicit teaching
Keywords	length, perimeter, measurement, millimetre, centimetre, metre, equivalence, reasoning, explicit teaching
Curriculum alignment
Curriculum connections	Numeracy
Strand and focus	Number, Measurement, Build understanding
Topics	Addition and subtraction, Length, Using units of measurement
AC: Mathematics (V9.0) content descriptions	AC9M3M01 Identify which metric units are used to measure everyday items; use measurements of familiar items and known units to make estimates AC9M4M01 Interpret unmarked and partial units when measuring and comparing attributes of length, mass, capacity, duration and temperature, using scaled and digital instruments and appropriate units AC9M5M01 Choose appropriate metric units when measuring the length, mass and capacity of objects; use smaller units or a combination of units to obtain a more accurate measure AC9M5M02 Solve practical problems involving the perimeter and area of regular and irregular shapes using appropriate metric units
Numeracy progression	Understanding units of measurement (P6, P7, P8)
Copyright details
Organisation	White Rose Maths
Copyright	© 2021 White Rose Maths. Free-for-education material.