Mathematics
Measurement
Conceptual
10–11 yrs
Perimeter (age 10+)
周长（10岁以上）
Description
Recognise that shapes with the same area can have different perimeters and vice versa; explore this relationship systematically
Mastery Evidence
- 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 your child 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?
Prerequisites 1
Estimating answers (age 9+)
探索面积与周长的关系需要掌握面积和周长的计算公式
Unlocks 0
No follow-up topics
