Grade 2 · Unit 5: Using units of measurement

Length and area

How long? How much surface?

Covering a floor

Tiles cover a floor with no gaps or overlaps. The amount of surface covered is the area. Length tells how long; area tells how much surface.

Measuring area with squares

Count the squares inside the shape. 3 rows of 4 = 12 squares. The area is 12 square units.

Same area, different shape

Shapes can look different and have the same area. The blue and red shapes both cover 6 squares. Count carefully!

Estimate, then measure

Estimate the length of a book: maybe 10 cm? Measure with a ruler: 12 cm. Your estimates get better with practice.

What I learnt

• I know the difference between length and area.
• I can find area by counting squares.