Mathematics
Measurement
Conceptual
8–9 yrs
Understanding Area
理解面积
Description
Understand that a unit square has one square unit of area and that the area of a plane figure is the number of unit squares that cover it without gaps or overlaps
Mastery Evidence
- Identify a unit square and state its area is 1 square unit
- Explain why a figure covered by 12 unit squares has area 12 square units
- Distinguish between area and perimeter as different measurements
Assessment Prompt
If your child counts the small squares inside a rectangle drawn on squared paper, can they tell you the area — and explain what "one square unit" means?
Prerequisites 1
Measuring length (age 7+)
长度测量的经验有助于理解面积作为二维测量的概念
Unlocks 1
Area (age 8+)
