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Oak National Academy
Oak National Academy
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Length and perimeter

Year 3 • Maths
We've put the lessons in order helping you build on what you've learned before so it’s best to start with the first lesson of a unit.

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These lessons will be removed by end of Summer Term 2025.

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1
Measuring lengths to the nearest cm or mm
2
Measuring length and drawing lines of a given length in mixed units
3
Making Appropriate Estimates of Length by Comparing
4
Length and Measurement Application
5
To calculate perimeters of 2D shapes in cm and mm
6
To Calculate Perimeters of 2D Shapes in Mixed Units
7
Measuring and comparing length in mixed units (cm and mm)
8
Calculating the perimeters of shapes in m and cm
9
Applying problem solving strategies to length
10
Length and perimeter application lesson