Mathematics·Measurement·conceptual
Perimeter (age 10+)
Recognise that shapes with the same area can have different perimeters and vice versa; explore this relationship systematically
Suggested ages 10–11
Learning journey
Your child is mastering advanced measurement skills — calculating volume and area using formulas, converting between different units of measurement, and solving real-world problems involving length, mass, and capacity.
Evidence of understanding
- Draw two rectangles with area 24 cm² but different perimeters
- Find two shapes with perimeter 20 cm but different areas
- Explain why a long thin rectangle and a square can have the same area but different perimeters
Assessment prompt
If Perimeter (age 10+) has 12 square tiles to arrange, can they make different-shaped rectangles and notice that the area stays the same (12 tiles) but the perimeters are all different?
Standards alignment
No external standards are linked to this topic.