2-min Warm-up — Write area or perimeter.
A fence around a yard measures the
Tiles covering a floor measure the
The ant walking around the edge finds the
Counting the squares inside finds the
Find BOTH: count squares inside for area, count units around for perimeter.
Area: squares
Perimeter: units
Area: squares
Perimeter: units
Area: squares
Perimeter: units
Area: squares
Perimeter: units
This shape is NOT a rectangle. Can you still find its area and perimeter? Yes — count carefully!
Area: square units Perimeter: units
Hint for perimeter: put a dot where you start and trace the outside edge.
Jayden found the perimeter of a 4 × 2 rectangle. He wrote: "Perimeter = 4 + 2 = 6 units." Is he right?
✓ or ✗?
Explain the error:
Correct perimeter: units
Create Your Own — Draw a shape on the grid below with an area of exactly 10 square units. It does NOT have to be a rectangle!
Now find its perimeter: units
Bonus: could a friend draw a DIFFERENT shape with area 10 but a different perimeter? yes / no