This powerpoint is about finding one third , it is great for teaching fractions

2. Finding One Third

3. Success Criteria
Aim
• I can find ⅓ of a shape, set of objects or quantity.
I can recognise and name ⅓.
I can find ⅓ of a shape, set of objects or quantity.
I can count in 3s to find ⅓.

4. Can you use the 100 square to count in 3s?
Counting in 3s
Can you
see a
pattern?
Can you
use the
pattern to
count
higher in
3s?

5. Counting in 3s
Can you count
in 3s without
the 100 square?
Can you
count back in
3s from 30?
Can you
name a
multiple of 3?

6. ⅓
What will
it look like? How many
parts will it
have been
divided into?
How many
parts will be
shaded in?

7. ⅓
1
3
The denominator tells us
what kind of fraction it is,
the number says how
many equal parts the
whole has been split into.
The circle has been
divided into 3
equal parts.
The numerator tells us
how many parts we are
interested in.
One of the parts
will be shaded.

8. Can You Spot ⅓?
×
Which of these are ⅓?
Click on the pictures to reveal the answer.
×

9. Fraction Wall
What can you see?
What happens to the size of the parts
as you travel down the wall?
1 whole
½ ½
⅓ ⅓
⅓
¼ ¼ ¼ ¼
What happens to the number of the
parts lower down the wall?

10. Finding ⅓ of 6
We need to divide our marbles into three groups. Help me count.
What is ⅓ of 6?
⅓ of 6 = 2

11. Let’s Try That Again
This time we’re going to try counting in 3s.
What is ⅓ of 6?
How did we find ⅓ of 6?
How many times did we count in 3?
3
6

12. What Is ⅓ of 12?
What do you think ⅓ of 12 is?
Can you use your counting in 3s to help you work it out?
⅓ of 12 = 4
3
6
9
12

13. Meet Boris, Norris and Morris
Boris, Norris and Morris have been naughty!
They need to be kept apart for a while!
Your task is to divide their space
up so they have ⅓ of the cage each
and ⅓ of the food each too!

14. Meet Boris, Norris and Morris