Year 9, Unit 1 – geometric representations
An 11-lesson unit designed to allow students to understand and use geometrical representations, applying concepts including proportion, scale factors, similarity and connections (networks) to represent real life objects, spaces, situations and concepts.
This program of learning addresses content from the focus areas of Properties of geometrical figures A, as well as Path focus areas, Properties of geometrical figures B and Introduction to networks.
The Mathematics K–10 syllabus (2023) is to be taught in Years 3 to 10 from 2024.
Detailed implementation information including key features and resources is available on the Mathematics syllabus development page (NESA).
Geometric representations is an 11-lesson unit for Year 9 with resources.
Introduction
Geometrical representations (DOCX 155 KB)
Lesson 1 – whales and chihuahuas
Lesson 2 – scaled copies
Lesson 3 – similar figures in art
Lesson 4 – how many angles?
Lesson 5 – corresponding sides and angles
Lesson 6 – scale factor
Lesson 7 – scale factor in similar triangles
Lesson 8 – movie magic
Lesson 9 – maps and scale
Lesson 10 – comparing representations
Lesson 11 – scale factor and area
Syllabus outcomes and content descriptors from Mathematics K–10 Syllabus © NSW Education Standards Authority (NESA) for and on behalf of the Crown in right of the State of New South Wales, 2023.