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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 content descriptions
ACMMG061 Measure, order and compare objects using familiar metric units of length, mass and capacity
ACMMG084 Use scaled instruments to measure and compare lengths, masses, capacities and temperatures
ACMMG108 Choose appropriate units of measurement for length, area, volume, capacity and mass
ACMMG109 Calculate perimeter and area of rectangles using familiar metric units
National numeracy learning progression Additive strategies
Understanding units of measurement - UuM7

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