Support · Stage 4 · Area
Support Explain how the area of a sector can be developed from the area of a circle (A = θ/360 × πr²)
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.
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 toolStarterGeoboard (Math Learning Center)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.
Determine the number of different rectangles that can be formed using whole-number dimensions for a given area (Reasons about spatial structure)
Stage 3 · Geometric measure B Draft mapping
- PhET Area BuilderUse it for: Build rectangles with the same area but different perimeters (and vice versa) before formalising A = l × w.