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.
Syllabus
Syllabus outcomes from Mathematics K–10 Syllabus (2022)External link © NSW Education Standards Authority (NESA) for and on behalf of the Crown in right of the State of New South Wales, 2024.
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.
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