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Learning objective overview
Master Teaching Guide coverage for this objective.
Current NZC (2007)
GM6-5
New NZC (2026)
NZC26-P4-GEO-SPR-P-Y10-02
Resources
- Alpha textbook: Estimating lengths from scale drawings and photos in Ex 21.05, pgs 342 - 344
- CorbettMaths practice exam questionsQuestions PDF · Answers
- Dr Austin Maths - Interpreting Map Scales Practice GridQuestions PDF · Answers
- Dr Austin Maths - Using Map Scales Practice GridQuestions PDF · Answers
- Dr Austin Maths - Scale Diagrams Practice GridQuestions PDF · Answers
- Dr Austin Maths - Drawing Scale Diagrams Practice GridQuestions PDF · Answers
Terminology
- scale drawing
- scale (ratio)
Task goals
- Understand that a scale of 1:n means 1 unit on the drawing or photo represents n of the same unit in real life, and convert both lengths to the same unit before scaling.
- Given a scale ratio 1:n and a real-world length in metres, find the corresponding model or drawing length in centimetres.
- Given a scale drawing's length in centimetres and its scale ratio 1:n, find the real length in metres.
- Given a map's scale ratio 1:n and a distance measured on the map in centimetres, find the real distance in kilometres.
Where this fits
What leads into this objective, and where it goes next.
You are here
Estimating lengths from scale drawings and photos
Do
Transforming 2D shapes, including composite shapes, by resizing them by any scale factor
Statement▸
Year 10 · Geometry · Spatial reasoning
NZC26-P4-GEO-SPR-P-Y10-02
Next
Year 10 is the last year of this phase — the curriculum lists nothing after this. No extension resources on the site yet.
Also under GM6-5:
For teachers
Need the fuller teaching notes for this objective? Open the Teacher guidance PDF.