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Stage 3 · Geometric measure B · Length: Solve problems involving the comparison of lengths using appropriate units · Topic: Geometry: shapes & angles · Year 5, 6

Determine the number of different rectangles that can be formed using whole-number dimensions for a given area (Reasons about spatial structure)

Dot point ID k-10-2022-stage-3-geometric-measure-b/geb-uni-stg3-02 · NESA code MA_K_10_CP_GEB_UNI_STG3_02 · See it on the NSW Curriculum website ↗

↩SupportBuild the prerequisite skills first · 1 resource ★EnrichExtension & rich tasks · 0 resources

Outcomes for this focus area (MA3-GM-01, MA3-GM-02, MA3-GM-03)

MA3-GM-01 locates and describes points on a coordinate plane

MA3-GM-02 selects and uses the appropriate unit and device to measure lengths and distances including perimeters

MA3-GM-03 measures and constructs angles, and identifies the relationships between angles on a straight line and angles at a point

Core resources for this dot point

On-level resources, grouped by type. Need the building blocks? Use Support. Ready for more? Use Enrich.

Simulation

SimulationStarter Drill
PhET Area Builder
PhET Interactive Simulations · Interactive (browser) · Free · Link checked 2026-10-15 · Hands-on, No prep
Use it for: Build rectangles with the same area but different perimeters (and vice versa) before formalising A = l × w.
Also tagged to: Establish the relationship between the lengths, widths and a…; Recognise that rectangles with the same area may have differ…; Investigate and compare the areas of rectangles that have th…; Investigate and compare perimeters of rectangles with the sa… and 1 more