Choose an efficient way to decompose a compound shape to calculate the area
I can choose the most effective way to decompose a shape into rectangles in order to calculate the area.
Choose an efficient way to decompose a compound shape to calculate the area
I can choose the most effective way to decompose a shape into rectangles in order to calculate the area.
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Lesson details
Key learning points
- Different methods for finding the area of compound rectilinear shapes will work in different situations.
- Compound rectilinear shapes can be split in different ways in order to calculate the area.
- Compare different methods to decompose shapes and decide which is the most efficient.
Keywords
Compound - A compound shape is made up of two or more shapes.
Common misconception
That a shape always has to be split into smaller shapes in order to calculate the area.
Show different ways to calculate area using the same shape. It can be split in different ways, completed and an area subtracted or a part cut and fitted into a gap.
To help you plan your year 5 maths lesson on: Choose an efficient way to decompose a compound shape to calculate the area, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 5 maths lesson on: Choose an efficient way to decompose a compound shape to calculate the area, download all teaching resources for free and adapt to suit your pupils' needs.
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Explore more key stage 2 maths lessons from the Link area of rectangles to multiplication unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
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Lesson video
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Starter quiz
6 Questions
Exit quiz
6 Questions
