The document discusses equivalent fractions. It explains that equivalent fractions are fractions that are equal to each other, such as 1/2 and 2/4. Fractions are equivalent if the same operation, such as dividing or multiplying, is performed on both the numerator and denominator. Examples show determining if fractions are equivalent by checking if the same operations, like dividing both numbers by 2 or 3, results in equal fractions. The key idea is that any operation on the top number must also be done on the bottom number to check for equivalence.

1. Fractions Lesson 3
Understanding
equivalent fractions
An interactive Qwizdom lesson

2. These numbers are called
fractions
1
2 3
15
5
6
2
3
4
7
12
22

3. Today’s lesson looks at
Equivalent
fractions
3
4
6
8

4. WALT : to understand
equivalent fractions and
decide if fractions are equal
3
4
6
8

5. In the word equivalent
there is the root word
equal
3
4
6
8

6. Fractions which are said to
be equivalent are equal to
each other.
3
4
6
8

7. For example
1
2
2
4

8. 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?
1
2
2
4

9. Yes!
These fractions are equal.
1
2
2
4
These are equivalent fractions.

10. Can you tell if the following
fractions are equal?
Are they equivalent
fractions?
1
2
3
6

11. Yes these fractions are
equal.
They are equivalent
fractions.
1
2
3
6

12. Are they equivalent
fractions?
2
3
4
6

13. Yes they are
equivalent fractions.
2
3
4
6

14. Are they equivalent
fractions?
1
4
3
12

15. Yes they are
equivalent fractions.
1
4
3
12

16. Are they equivalent
fractions?
1
3
2
5

17. No, they are not equal.
They are not equivalent
fractions.
1
3
2
5

18. Here are some equivalent
fractions.
Can you work out a strategy
for deciding whether they
are equal?
1
4
2
8

19. Here are some equivalent
fractions.
Can you work out a strategy
for deciding whether they
are equal?
2
5
4
10

20. Here are some equivalent
fractions.
Can you work out a strategy
for deciding whether they
are equal?
1
3
3
9

21. Use thinking time to discuss.
3
12
1
4

22. Use thinking time to discuss.
1
2
5
10

23. What ideas have you come
up with?
1
2
5
10

24. Explain your
strategy to the class.
1
2
5
10

25. There is a relationship
between the fractions using
dividing and multiplying.
1
4
5
20

26. What ever you do to
the top number . .
You must do to the
bottom number.
1
4
5
20

27. What ever you do to the top
number . . You must do to the
bottom number.
1
5
5
20
divide by 5
divide by 5

28. What ever you do to the top
number . . You must do to the
bottom number.
1
2
2
4
divide by 2
divide by 2

29. What ever you do to the top
number . . You must do to the
bottom number.
1
4
3
12
divide by 3
divide by 3

30. What ever you do to the top
number . . You must do to the
bottom number.
1
5
4
20
divide by 4
divide by 4

31. What ever you do to the top
number . . You must do to the
bottom number.
1
4
2
8
divide by 2
divide by 2

32. What ever you do to the top
number . . You must do to the
bottom number.
9
15
3
5
multiply by 3
multiply by 3

33. What ever you do to the top
number . . You must do to the
bottom number.
4
18
2
9
multiply by 2
multiply by 2

34. What is the missing number?
2
10
1
5
Click for answer

35. What is the missing number?
2
4
4
8
Click for answer

36. What is the missing number?
4
5
32
40
Click for answer

37. Sometimes you might need to work
out equivalent fractions in
three steps.
6
8
48
64
3
4
Divide by 8
Divide by 8
Divide by 2
Divide by 2

38. Sometimes you might need to work
out equivalent fractions in
three steps.
6
10
48
80
3
?
Divide by 8
Divide by 8
Divide by 2
Divide by 2
What is the
missing
number?
Click for answer
5

39. Sometimes you might need to work
out equivalent fractions in
three steps.
6
10
48
80
3
?
Divide by 8
Divide by 8
Divide by 2
Divide by 2
What is the
missing
number?
Click for answer

40. LO: To revise work equivalent fractions
I understand these ideas fully.
I have some understanding but
I need more practice.
I don’t understand these ideas at
all and need to work again on this
unit of work.
A
B
C

41. End of slide showEnd of slide show