This document provides examples and explanations of how to calculate the area and perimeter of various shapes, including squares, rectangles, and irregular figures. It gives step-by-step instructions on using the formulas for area (A=s x s for squares, A=l x w for rectangles) and counting sides to find perimeter. Students are then given practice problems to measure perimeters of shapes from a previous activity using rulers.

1. PREPARED BY: JOAN MAGCONGEY

2. Let’s find the area of this
surface. Each square is equal
to one foot.
1 2
3
4 5 6 7 8
9 10 11 12 13 14
15
15 square feet
Area is the amount
of surface space
that an object has.

3. Count the
number of
green squares
to determine
the area of
this surface.
What is the
area?
The area is
equal to 9
square units.
Try thisTry this
one!one!
1
5
2
4
7
3
6
8 9

4. Find the area of the squares using the
formula A = s2
.
A. B.
D.C.
A = 16 cm2
A = 25 sq. in.
A = 49 m2 A = 81 sq. ft.

5. Area of a Square
the formula for the
area of a square is: A =
s x s or A = s2

6. Area of a Rectangle
The formula for
the area of a
rectangle is:
A = l x w

7. Find the area of the rectangles
using the formula A = l x w.
A. B.
D.
C.
A = 24 cm2 A = 77 sq. in.
A = 140 mm2 A = 48 sq. ft.

8. Find the area of the figures.
A. B.
D.
C.
A = 16 sq. units
A = 27 sq. units
A = 30 sq. units A = 8 sq. units

9. Perimeter is the
distance around the
outside of an object.

10. Perimeter = 24 feet
Let’s find the perimeter of this surface. Each
square is equal to one foot.
Count the number of sides.

11. Count the
number of sides
to determine
the perimeter
of this flat
object.
The
perimeter is
equal to ?.
12 units

13. Two neighbors build swimming
pools. This is what the pools
look like.
Family A Family B
Which family
has the pool
with the bigger
swimming area?
Let’s do these problems together.
Area = 8 Area = 7
Perimeter = 12 Perimeter = 14
Answer: Family A

14. APPLICATION:
The students will measure
the perimeter of each
polygons from
yesterday’s activity using
their ruler and write
them down on their
student’s handbook

15. AFTERNOON SESSION:
Field work
Students will go out and measure
the perimeters of the canteen's
table, covered court, and stage.
EACH GROUP REPRESENTATIVES WILL
SHARE THEIR DATA.
worksheet