Stage 3, mathematics,Year B – Unit 32
This 2-week, Year B unit develops the big idea that understanding relationships between the properties of 2D shapes helps visualise and organise spaces in the world.
Students are provided opportunities to:
- explore and manipulate polygons to understand the properties of regular and irregular shapes
- translate, rotate and reflect rectangles and triangles to form compound shapes
- examine the relationship between the area of a parallelogram and the area of a triangle
- apply their knowledge of 2D space to calculate the area of composite shapes.
Syllabus
Syllabus outcomes from Mathematics K–10 Syllabus (2022) © NSW Education Standards Authority (NESA) for and on behalf of the Crown in right of the State of New South Wales, 2024.
Multiplicative relations A – MAO-WM-01, MA3-MR-01
- Determine products and factors
- Use partitioning and place value to multiply 2-, 3- and 4-digit numbers by one-digit numbers
- Use estimation and rounding to check the reasonableness of answers to calculations
Multiplicative relations B – MAO-WM-01, MA3-MR-01
Select and apply strategies to solve problems involving multiplication and division with whole numbers
Two-dimensional spatial structure A – MAO-WM-01, MA3-2DS-01
2D shapes: Classify two-dimensional shapes and describe their properties
Two-dimensional spatial structure B – MAO-WM-01, MA3-2DS-01, MA3-2DS-02, MA3-2DS-03
- 2D shapes: Dissect two-dimensional shapes and rearrange them using translations, reflections and rotations
- Area: Find the area of composite figures
- Area: Calculate the area of a parallelogram using subdivision and rearrangement
- Area: Determine the area of a triangle