AC9M8M01 Year 8 Mathematics

This Content Descriptor from Year 8 Mathematics provides the specific knowledge and skills students should learn. Use it to plan lessons, create learning sequences, and design assessments that align with the Australian Curriculum v9.

solve problems involving the area and perimeter of irregular and composite shapes using appropriate units

Elaborations

• 1 determining the area of composite shapes by composing or decomposing shapes
• 2 using arrays and rectangles to approximate the area of irregular shapes in situations such as a council needing to work out how much mosquito spray to use for a swamp area or a farmer needing to work out how much seed, fertilizer and herbicide are required to cover a paddock
• 3 determining the perimeter and area of irregular shapes by sums of increasingly accurate covering measurements, such as line segments and grids; for example, using millimetres or square millimetres as opposed to centimetres or square centimetres

Related Achievement Standards