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.
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.
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.
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.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
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