Math · Stage 3
Measure the area of a rectangle by counting unit squares (rows × columns)
Cover a rectangle with equal unit squares, count them — and spot the short way: area = rows × columns.
✦ Math📘 Stage 3 · S3⏱ ~10 min🧒 Ages 7–8★ Free to start
I can measure the area of a rectangle by counting unit squares, and see that area = rows × columns.
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Kavi Tiles the Floor 🟩
Kavi is laying square tiles to cover a rectangle floor — no gaps, no overlaps ⬜. "The space a flat shape covers is its area," hoots Kavi. "I set the tiles in neat rows. This floor is 3 rows of 4 tiles — I could count all 12… or take the short way: 3 × 4 = 12 square tiles!"
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What your child will learn
1Cover it with unit squaresArea is how much flat space a shape covers. To measure it, we cover the rectangle with equal unit squares — no gaps, no overlaps ⬜. Tap Add 5 to fill the top row, then again for the bottom.
2Rows and columns of a rectangleThis rectangle is tiled with unit squares. A row goes across →, a column goes down ↓. Here there are 3 rows and 4 columns. Tap each word to learn its job.
3Count them all OR multiplyBoth ways give the SAME area for a rectangle. Tap each card to hear how. When the squares sit in equal rows, multiplying is the fast way.
4Skip-count the rowsA rectangle with rows of 4: add one row at a time — 4, 8, 12, 16, 20. Each number is the area after one more row of 4.
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A peek inside
A rectangle is covered with 3 rows of 4 unit squares ⬜. What is its area?
3 rows × 4 in each row → 3 × 4
Try this at home: A rectangle has 2 rows of 4 unit squares. Count them: __ square units · as rows × columns: 2 × 4 = __
Ready to play and learn?
Start the free interactive lesson, or print the handout for screen-free play.
Part of Math · Stage 3 · S3 on KAVI Academy — a secular, whole-child learning platform for ages 5–12.