The document focuses on understanding the concept of factors, providing tasks and examples related to identifying factors of various numbers, including real-life applications such as grouping players and items. It emphasizes finding common factors and includes interactive activities like drawing Venn diagrams and using physical items for learning. The educational goals are to help students recognize factors, apply them, and enhance mathematical understanding.

2. Guess who am I?
• I am an even number less than 18 and divisible
by 5.
• I am an odd number between 20 and 30 and
divisible by 5.
• I am greater than 20 less than 40 and divisible
by 10.
•

3. Find out the pairs which give us the product 12

4. 1 × 12 = 12
2 × 6 = 12
3 × 4 = 12
What did you understand from the above
number sentences?
Factors of 12

5. Objectives:
Students will be able to:
• Understand the concept of factors
• Find the common factors.
• Apply the concept of factors in real life.

6. 1 X 12 = 12
2 X 6 = 12
3 x 4 = 12
1 , 12 , 2 , 6 ,3 and 4 are all the numbers
we multiplied to get 12.
These 1 , 2 , 3 , 4 , 6 and 12 are all factors
of 12.
The numbers that are multiplied to get
a product are called its factors.

7. The factors of 12 : 1 , 2 , 3 , 4 ,6 , 12
The factors of 6 :
Are you able to find out anything ?
• 1 is the factor of every number
• Every number is the greatest factor of itself
• The factors of a number are equal to or less than the number
• When a number is expressed as a product of its factors we say
that the number has been factorized
1 , 2 , 3 , 6

8. FACTORS
Write the factors of 18
• 1 × 18 = 18
• 2 × 9 = 18
• 3 × 6 = 18
• So the factors of 18 are 1, 18, 2, 9, 3 & 6

9. What do you understand from
the given diagram?

10. Common factors in real life.
• At a music concert, tabla players and sitar players are to be
seated in equal groups on a stage. If there are 12 sitar players
and 9 tabla players, what are the different kinds of equal
groups that can be made with each group playing only one
kind of instrument?
Factors of 12 – 1,2,3,4,6,12
Factors of 9 – 1,3,9
Common factors are 1 and 3
They can be grouped as 1 player each
or
Groups of 3 each

11. • Find the common factors
(a) 48 and 32
(b) 18 and 42
© 36 and 48
• A group of 10 Bharatanatyam dancers have to
perform on the stage in equal groups. How
many different kinds of equal groups they can
make?
Practice Task

12. Assessment [15 minutes]
Independent task Shared task Guided Task
1)
a) Factors of 18
b) Factors of 42
4) Find the common factors
of 32 and 18.
7) Find the factors of 72.
2) Find the common factors
of 45 and 25?
5) The number 18 has six
factors. Two of these factors
are 1 and 18. Find the other
four?
8) Alan has 24 bottles of
Indian spices and 16
bottles of foreign spices
in his restaurant kitchen.
Help him to store in
racks with same number
of bottles.
3) Mrs Sheela has 24 sarees.
She likes to arrange them in
equal sized piles in her
cupboard. How many kinds
of equal sized piles can she
make?
6) The numbers 4 and 9 both
have exactly four factors.
Find two more numbers that
have exactly four factors.
9) Form a real life
situation where we make
use of factors.

13. Development
Math Lab Activity
(1) Draw the Venn diagram for 36 and 40
(2) Objective: To find the factors of numbers.
Materials Required: Kidney beans/Counters/Buttons/Blocks and a
recording sheet.
Preparation: Students work in pairs with a bowl of kidney beans and a
recording sheet.
Number Factors
20
12
18
24

14. Plenary
What is my number?
It is a factor of 24,
A factor of 40, and
A factor of 52
But it is not the number ‘2’
My number is 4

15. Where you are!

16. THANK YOU….!
Ms Aswathi