"When I callyour name, respond with either:
(1) One thing on your mind today, or
(2) One word to describe how you're feeling.
Example: "Present! Feeling hopeful."
INSPIRED BY
Lesson Targets
• Illustrateand estimate the area of a square using
square tile units.
• Explore inductively the derivation of the formula for
the area of a square using square tile units.
• Find the areas of squares in sq. cm and sq. m.
• Solve problems involving areas of squares.
7.
Did you know?
Squareshapes have been used in
architecture for millennia. Ancient
civilizations, such as the Mesopotamia
and Egyptian, utilized square shapes in
the construction of buildings and
monuments.
8.
In mathematics, areais
defined as the amount of
space occupied by two-
dimensional figures such as
squares and rectangles. It is
the number of
9.
• A squaretile unit is a
square tile with a side
length of 1 unit.
• The figure on the right
is 1 square tile unit.
• Count the number of
square tile units in each
of the squares shown
below.
1 u n i t
1
u
n
i
t
10.
In figure 1,there are 4
square tile units. We say,
“the area is 4 square tile
units.”
1 unit 1 unit
1
u
n
i
t
1
u
n
i
t
11.
In figure 2,there are 9
square tile units. We say,
“the area is 9 square tile
units.”
1 unit 1 unit 1 unit
1
u
n
i
t
1
u
n
i
t
1
u
n
i
t
Area Perimeter
Area ofSquare
The area is the product of
side and side. Area is
expressed in square units.
The perimeter is twice the
sum of the length and width.
Perimeter is expressed in
units.
P E R I M E T E R =
2 ( L E N G T H + W I D T H )
L E N G T H
W
I
D
T
H
A R E A =
S i d e x s i d e
14.
Area Perimeter
Area ofSquare
The area is the product of
side and side. Area is
expressed in square units.
The perimeter is twice the
sum of the length and width.
Perimeter is expressed in
units.
P E R I M E T E R =
2 ( L E N G T H + W I D T H )
L E N G T H
W
I
D
T
H
A R E A =
S i d e x s i d e
Editor's Notes
#3 Okay class, let’s start with a quick challenge! I’m giving each group four strips of paper — your job is to form a perfect square. Remember, all sides of a square should be equal. Ready? Go!"
#4 Okay class, let’s start with a quick challenge! I’m giving each group four strips of paper — your job is to form a perfect square. Remember, all sides of a square should be equal. Ready? Go!"
