Mathematics
Measurement
Procedural
8–9 yrs
Area by Tiling
用方格计算面积
Description
Find the area of a rectangle by tiling it with unit squares and show that the result equals the product of the side lengths
Mastery Evidence
- Tile a 4×6 rectangle and count 24 squares, then verify 4×6=24
- Explain why the number of rows times the number in each row gives the area
- Draw a rectangle on squared paper, tile it, and write the multiplication
Assessment Prompt
If a rectangular room is 4 m long and 3 m wide, can your child work out its area by tiling it with 1-metre squares in their head — and explain why that equals 4 × 3?
Prerequisites 1
Area (age 8+)
计算单位正方形的数量是将铺砖与乘法联系起来的先决条件
Unlocks 1
Understanding angles (age 8+)
