1. TOPIC: PERIMETER AND AREA
Our Aims
With this software, we hope to
a) give variety in teaching-learning process.
New Software® ™
b) enhance pupils’ understanding through
ex
Dynamic Slide’
interactive learning.
c) expose pupils with the use of ICT.
Done by:
1) Cikgu Sitti Khatijah Patingo
2) Cikgu Norhaziah Mohd.Hardi
3) Cikgu Siti Haslina Hj.Hidup
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Copyright® May 2006
SEKOLAH RENDAH PSB SOAS, KUALA BELAIT
Mathematics Software Version 1.0
2. MAIN MENU
Introduction to perimeter Introduction to area
Perimeter of a square Area of a square
Perimeter of a rectangle Area of rectangle
HOT QUIZ TO TRY!
P
3. INTRODUCTION TO PERIMETER
• WHAT IS A PERIMETER?
Answer: It is the distance all around the shape. Click here
4m
A 3 cm
B
2m
3 cm I’m moving around
The blue line is called
The red line is Perimeter ofClick me!
the figure figure B
B
known as Perimeter
4. INTRODUCTION TO PERIMETER
• Let us see another example of figure C below:
Put a string around the figure Click
Use the ruler to measure the string
Measure
Figure C The rope is 11.1 cm long.
We say that the perimeter
of the figure C above is 11.1 cm
MAIN MENU
5. PERIMETER OF A SQUARE
• WHAT IS A SQUARE ?
- A square is a shape with all sides are equal. Click
- Opposite sides are parallel. Click
- All angles are right angles. Click
3 cm
Each side of this square is 3 cm.
90° 90°
The two red line and
3 cm 3 cm the two green line are opposite
and parallel to each other.
90° 90°
All the angles are 90°
3 cm
6. PERIMETER OF A SQUARE
• HOW TO CALCULATE THE PERIMETER OF A SQUARE ?
First, look at the value of each side of the square. Click
The value for each side is 3 cm
Then, add all the values together. Click
3 cm Calculation
3 cm + 3 cm + 3 cm + 3 cm = 12 cm
From this calculation, we can say
that:-
3 cm 3 cm
PERIMETER OF SQUARE = 4 X SIDE
= 4 X 3 cm
= 12 cm
3 cm MAIN MENU
7. PERIMETER OF A RECTANGLE
• WHAT IS A RECTANGLE?
- A rectangle is a shape with opposite sides are equal. Click
- Opposite sides are parallel. Click
- All angles are right angles. Click
The length is 4 cm and
4 cm the breadth is 2 cm.
90° 90° The two blue lines and
the two yellow lines are
2 cm 2 cm
parallel and opposite of
90° 90° each other.
4 cm All the angles are 90°.
8. PERIMETER OF A RECTANGLE
How to calculate the perimeter of a rectangle?
First, look at the value of each side of the rectangle. Click
• The length is 4 cm and the breadth is 2 cm.
Then, add all the values together. Click
4 cm
Using formula,
PERIMETER OF RECTANGLE
2 cm 2 cm = 2 X ( LENGTH + BREADTH )
= 2 X ( 4 cm + 2 cm )
= 2 X 6 cm
= 12 cm
4 cm
Calculation
2 cm + 4 cm + 2 cm + 4 cm
The answer is 12 cm MAIN MENU
9. INTRODUCTION TO AREA
• WHAT IS A AREA?
Answer: It is the space occupied by a figure. It is measure in square
unit example: cm², m². Click
3 cm 4m
B
2m
3 cm A
The blue region is the
Click me of figure B
area
The red region is
called Area MAIN MENU
10. AREA OF A SQUARE
• HOW TO CALCULATE THE AREA OF A SQUARE ?
- This square is made up of 1 cm by 1cm squares. Click
- The space covered: 1 cm by 1 cm is equal to 1 cm². Click
- The square is made up of nine 1 cm². Click
1 cm
1 cm 1 1
cm² 1 2
cm 3
The space occupied by the square
1 cm is equal 9 cm².
6 5 4
This known as its AREA.
7 8 9
11. AREA OF A SQUARE
• CALCULATE THE AREA OF A SQUARE BY FORMULA
First, look at the value of the two sides of the square. Click
Then, multiply the values together. Click
Calculation
3 cm x 3 cm = 9 cm²
The area is 9 cm² which is
3 cm
the same as the previous example
This calculation shows that,
AREA OF SQUARE = SIDE X SIDE
3 cm
MAIN MENU
12. AREA OF A RECTANGLE
• How to calculate the area of rectangle?
- Look at the rectangle below, it is made up of 8 squares. Click
- Each square has an area of 1 cm². Click
1 1 1 cm² 1 cm² 1 4
cm² 2 3 cm²
There are 8 squares inside
the rectangle.
5 6 7 8
1 cm² 1 cm² 1 cm² 1 cm²
Therefore, the total area of the rectangle is 8 cm².
13. AREA OF A RECTANGLE
• CALCULATE THE AREA OF A RECTANGLE USING FORMULA
Look at the value of breadth and length of the rectangle. Click
The breadth is 2 cm and the length is 4 cm.
Then, multiply both value together. Click
4 cm
The area of the rectangle is 8 cm²
2 cm This calculation shows that,
AREA OF RECTANGLE
= LENGTH x BREADTH
Calculation
2 cm x 4 cm = 8 cm²
MAIN MENU
