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Equivalent Fractions

This document provides a lesson on equivalent fractions. It begins by introducing fractions and then states that the lesson will focus on equivalent fractions. It explains that equivalent fractions are equal to each other and provides examples. Strategies for determining if fractions are equivalent are discussed, such as whatever is done to the top number must also be done to the bottom number. Examples of using these strategies to determine if fractions are equivalent are provided. The document stresses the importance of understanding equivalent fractions.

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725 views41 pages

Equivalent Fractions

This document provides a lesson on equivalent fractions. It begins by introducing fractions and then states that the lesson will focus on equivalent fractions. It explains that equivalent fractions are equal to each other and provides examples. Strategies for determining if fractions are equivalent are discussed, such as whatever is done to the top number must also be done to the bottom number. Examples of using these strategies to determine if fractions are equivalent are provided. The document stresses the importance of understanding equivalent fractions.

Uploaded by

api-311129856
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PPT, PDF, TXT or read online on Scribd
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Fractions Lesson 3

Understanding
equivalent fractions
An interactive Qwizdom lesson

These numbers are called

fractions
1
2

3
15
5
6

2
3
4
7

12
22

Todays lesson looks at

Equivalent
fractions
6
8

3
4

WALT : to understand
equivalent fractions and
decide if fractions are
equal

6
8

3
4

In the word equivalent


there is the root word
equal

6
8

3
4

Fractions which are said to


be equivalent are equal to
each other.

6
8

3
4

For example

2
4

1
2

So if you were given 2


quarters of a cake and your
friend was given half a cake
would you both have the same
amount?

2
4

1
2

Yes!
These fractions are equal.
These are equivalent fractions.

2
4

1
2

Can you tell if the


following fractions are
equal?
Are they equivalent
fractions?

3
6

1
2

Yes these fractions are


equal.
They are equivalent
fractions.

3
6

1
2

Are they equivalent


fractions?

4
6

2
3

Yes they are


equivalent fractions.

4
6

2
3

Are they equivalent


fractions?

3
12

1
4

Yes they are


equivalent fractions.

3
12

1
4

Are they equivalent


fractions?

2
5

1
3

No, they are not equal.


They are not equivalent
fractions.

2
5

1
3

Here are some equivalent


fractions.
Can you work out a
strategy for deciding
whether they are equal?

2
8

1
4

Here are some equivalent


fractions.
Can you work out a
strategy for deciding
whether they are equal?

4
10

2
5

Here are some equivalent


fractions.
Can you work out a
strategy for deciding
whether they are equal?

3
9

1
3

Use thinking time to


discuss.

1
4

3
12

Use thinking time to


discuss.

5
10

1
2

What ideas have you come


up with?

5
10

1
2

Explain your
strategy to the class.

5
10

1
2

There is a relationship
between the fractions
using dividing and
multiplying.

5
20

1
4

What ever you do to


the top number . .
You must do to the
bottom number.

5
20

1
4

What ever you do to the top


number . . You must do to the
bottom number.
divide by 5

5
20
divide by 5

1
5

What ever you do to the top


number . . You must do to the
bottom number.
divide by 2

1
2

2
4
divide by 2

What ever you do to the top


number . . You must do to the
bottom number.
divide by 3

3
12
divide by 3

1
4

What ever you do to the top


number . . You must do to the
bottom number.
divide by 4

4
20
divide by 4

1
5

What ever you do to the top


number . . You must do to the
bottom number.
divide by 2

1
4

2
8
divide by 2

What ever you do to the top


number . . You must do to the
bottom number.
multiply by 3

3
5

9
15
multiply by 3

What ever you do to the top


number . . You must do to the
bottom number.
multiply by 2

2
9

4
18
multiply by 2

What is the missing number?

1
5
Click for answer

2
10

What is the missing number?

4
8
Click for answer

2
4

What is the missing number?

32
40
Click for answer

4
5

Sometimes you might need to


work out equivalent fractions in
three steps.
Divide by 8

48
64
Divide by 8

Divide by 2

6
8

3
4
Divide by 2

Sometimes you might need to


work out equivalent fractions in
three steps.
Divide by 8

48
80
Divide by 8
Click for answer

Divide by 2

6
10
Divide by 2

3
?
5

What is the
missing
number?

Sometimes you might need to


work out equivalent fractions in
three steps.
Divide by 8

48
80
Divide by 8
Click for answer

Divide by 2

6
10
Divide by 2

3
?

What is the
missing
number?

LO: To revise work equivalent fractions

I dont understand these ideas at


all and need to work again on this
unit of work.

I have some understanding but


I need more practice.

I understand these ideas fully.

End of slide show

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