Support · Stage 4 · Area

Support Develop and apply the formula to find the area of a triangle: A = 1/2bh, where b is the base length and h is the perpendicular height

Resources for the prerequisite content of this dot point: earlier-stage (or earlier sub-level) dot points in the same strand that students usually need first. Use these to fill gaps before or alongside the core lesson.

Prerequisite links are draft mappings generated from the syllabus structure (earlier stage, same strand, closest content). They are being reviewed by teachers. Spot a poor match? Tell us.

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Prerequisite dot points

Investigate the area of a triangle by comparing it to the area of a parallelogram with the same base length and height

Stage 3 · Two-dimensional spatial structure B Draft mapping

  • Interactive toolStarter
    Geoboard (Math Learning Center)
    The Math Learning Center · Interactive (browser) · Free · Link checked 2026-10-15 · No prep
    Use it for: Make triangles and parallelograms to compare areas.

Establish the relationship between the area of a triangle and the area of a parallelogram formed by duplicating and rotating the triangle

Stage 3 · Two-dimensional spatial structure B Draft mapping

No checked resources on this prerequisite dot point yet.

Record, using words, a method for finding the area of any triangle

Stage 3 · Two-dimensional spatial structure B Draft mapping

No checked resources on this prerequisite dot point yet.