MathematicsRatio & ProportionAges 10–11
Scale and similar shapes
Solve problems involving similar shapes where the scale factor is known or can be found
Teach this topic
Share and support
Teaching Table · Plan outline
Set out your lesson
A reviewed step-by-step guide is not available yet. This is an outline from the plan, not a fully authored guide.
No teaching instructions are available for this lesson. Choose another topic or return to your plan.
Family records and proof options
Keep a record of your learning
Save photos, notes, and attendance. Export a proof packet for compliance or portfolio reviews.
Learning resources
Reviewed external links that reinforce this concept. They do not replace Gakuva’s teaching approach.
No reviewed resources for this concept yet.
The teaching approach above still stands. Curated practice links will appear here as the shelf fills.
Check understanding
- 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
“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?”
Curriculum record
- Type
- Procedural
- Subject
- Mathematics
- Domain
- Ratio & Proportion
- Age range
- Ages 10–11