Week 24TuesdayArea: Counting Unit Squares
1Warm-up: Perimeter Review

2-min Warm-up — Perimeter check! A square has sides of 3 units. Perimeter = 3 + 3 + 3 + 3 = units

A rectangle has sides 5, 2, 5, 2. Perimeter = units

2Learn: Space a Shape Covers

Area is the space a shape COVERS. We measure it by counting unit squares — like counting tiles on a floor.

Count the squares: 6 square units

Your turn: square units

3Estimate First! Then Count

Estimate First! Look quickly — do NOT count yet. Write your estimate. THEN count the squares and write the actual area.

Estimate: squares

Actual: squares

Estimate: squares

Actual: squares

Estimate: squares

Actual: squares

Estimate: squares

Actual: squares

4Two Ways to Count Area

Two Ways to Count Area — Find the area of this 3 × 4 rectangle two different ways.

Way 1: Count every square one by one.

Area:

Way 2: Count one row, then skip count: 4, 8, ...

Area:

Which way was faster for you?

5Word Problems

Read carefully. Draw the shape on the grid thinking space if it helps.

Dad is tiling the bathroom floor. It is 4 tiles long and 3 tiles wide. How many tiles does he need to cover the whole floor?

Draw or write your thinking:

Answer:

A garden bed is covered with 2 rows of 6 grass squares. A second bed has 3 rows of 4 squares. Which bed covers more space?

Draw or write your thinking:

Answer: