Two-dimensional spatial structure A
Mathematics K–10 (2022) · Stage 3 · View this focus area on the NESA NSW Curriculum website ↗
Outcomes
MA3-2DS-01 investigates and classifies two-dimensional shapes, including triangles and quadrilaterals based on their propertiesMA3-2DS-02 selects and uses the appropriate unit to calculate areas, including areas of rectanglesMA3-2DS-03 combines, splits and rearranges shapes to determine the area of parallelograms and trianglesContent dot points
Each dot point has its own page with resources matched to it.
2D shapes: Classify two-dimensional shapes and describe their properties
- Identify and classify triangles as equilateral, isosceles or scalene triangles 2 resources · 2 interactive/game
- Recognise that triangles and quadrilaterals can be classified in more than one way (Reasons about spatial relations)
- Compare side and angle properties of triangles and quadrilaterals using measurement and symmetry 1 resource · 1 interactive/game
- Investigate the symmetry properties (line and rotational) of quadrilaterals
- Identify regular and irregular polygons
Area: Use hectares and square kilometres as units of measurement for area
- Recognise the need for formal units larger than the square metre
- Identify situations where square kilometres and hectares are used for measuring area
- Equate one hectare to the area of a square with side lengths of 100 m, ie 10 000 square metres = 1 hectare (ha)
- Record areas using square kilometres and hectares
Area: Calculate the areas of rectangles using familiar metric units
- Recognise the importance of using the same units of length on the sides of rectangles to create ‘square units’
- Establish the relationship between the lengths, widths and areas of rectangles 1 resource · 1 interactive/game
- Record, using words, the method for finding the area of any rectangle
- Calculate areas of rectangles in square centimetres (cm²), square metres (m²) and square kilometres (km²)
- Recognise that rectangles with the same area may have different dimensions 1 resource · 1 interactive/game
- Investigate and compare the areas of rectangles that have the same perimeter 1 resource · 1 interactive/game
Stage 3 planning resources
Stage- or course-wide documents (scope and sequences, guides) that cover this focus area alongside others.
- Unit/PlanningSample scope and sequence – Stage 3
- Unit/PlanningMaking connections – Stage 3 (parallel content)