Year 9 · Phase 4 (Years 9-10) · Measurement
Perimeter, circumference and area
What the teaching sequence covers here
Find perimeters of 2D shapes and circumferences of circles, understanding pi as circumference divided by diameter, derive and use perimeter formulae for half and quarter circles, and find areas of parallelograms, trapeziums and kites by relating each formula back to the rectangle.
This is ChalkBee's own paraphrase of the official teaching sequence, not the Ministry's wording. Tahurangi curriculum content is Crown copyright, Ministry of Education, licensed CC BY-NC 4.0, so we describe it in our own words and cite the source: NZC Mathematics and Statistics Phase 4 (Years 9-10). Always check the official page for the exact requirement.
nz-p4-meas-03. The Ministry of Education does not assign alphanumeric codes to teaching-sequence statements; this id is a stable site-internal reference.Relevant Year 9 worksheets
Matched by age: this NZ year lines up with our Grade 8 material. These resources support parts of the statement; they are not a complete assessment of every clause.