Mathematics
Ratio & Proportion
Procedural
10–11 yrs
Scale and similar shapes
比例与相似图形
Description
Solve problems involving similar shapes where the scale factor is known or can be found
Mastery Evidence
- Find the missing side of a similar rectangle given a scale factor of 3
- Determine the scale factor between two similar triangles from given side lengths
- Use a scale factor to enlarge or reduce a shape and verify that all sides are in the same ratio
Assessment Prompt
If your child has a scale drawing where 1 cm represents 5 m, and a room measures 3.5 cm on the plan, can they work out the real length of the room?
