Calculate missing dimensions in rectangles and compound rectilinear shapes
I can calculate missing dimensions in rectangles and compound rectilinear shapes.
Calculate missing dimensions in rectangles and compound rectilinear shapes
I can calculate missing dimensions in rectangles and compound rectilinear shapes.
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Lesson details
Key learning points
- Division is used to calculate a missing dimension when the area and the other dimension are known.
- Inverse operations are used to calculate missing dimensions when areas are known.
- 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.
Dimension - A dimension is a measurement of length in one direction. Width and height are examples of the dimensions of 2D shapes.
Common misconception
Applying known facts and strategies to solve problems involving division. Being able to break down a problem into steps when it comes to compound shapes.
Provide opportunities to discuss approaches and highlight the efficient strategies and approaches. Acknowledge that there is more than one way to solve a problem whilst focusing on efficient and effective strategies.
To help you plan your year 5 maths lesson on: Calculate missing dimensions in rectangles and compound rectilinear shapes, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 5 maths lesson on: Calculate missing dimensions in rectangles and compound rectilinear shapes, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
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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.
Licence
Lesson video
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Starter quiz
6 Questions
Exit quiz
6 Questions
