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
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
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
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?
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: