This document is a lesson on equivalent fractions that includes examples of equivalent and non-equivalent fractions. It explains that two fractions are equivalent if they represent the same amount, and whatever operation is done to the top number of a fraction must also be done to the bottom number. Some key points covered include identifying equivalent fractions, developing a strategy to determine if fractions are equivalent by looking at relationships between the numerator and denominator, and working through multi-step examples to find equivalent fractions.

1. Fractions Lesson 3
Understanding equivalent
fractions
MALT©2006 Maths/Fractions Slide Show : Lesson 3

2. These numbers are called
fractions
MALT©2006 Maths/Fractions Slide Show : Lesson 3
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3
15
56
23
47
12
22

3. Here are some
mixed numbers
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68
13
49
1 2

4. Today’s lesson looks at
Equivalent
fractions
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MALT©2006 Maths/Fractions Slide Show : Lesson 3

5. WALT : to understand
equivalent fractions and
decide if fractions are equal
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MALT©2006 Maths/Fractions Slide Show : Lesson 3

6. In the word equivalent
there is the root word
equal
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7. Fractions which are said to
be equivalent are equal to
each other.
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8. For example
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9. 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? 12 24
MALT©2006 Maths/Fractions Slide Show : Lesson 3

10. Yes!
These fractions are equal.
These are equivalent fractions.
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11. Can you tell if the following
fractions are equal?
Are they equivalent
fractions?
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MALT©2006 Maths/Fractions Slide Show : Lesson 3

12. Yes these fractions are
equal.
They are equivalent
fractions.
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13. Are they equivalent
fractions?
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14. Yes they are
equivalent fractions.
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15. Are they equivalent
fractions?
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3
12
MALT©2006 Maths/Fractions Slide Show : Lesson 3

16. Yes they are
equivalent fractions.
14
3
12
MALT©2006 Maths/Fractions Slide Show : Lesson 3

17. Are they equivalent
fractions?
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2
5
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18. No, they are not equal.
They are not equivalent
fractions.13
2
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19. Here are some equivalent
fractions.
Can you work out a strategy
for deciding whether they
are equal?
14
2
8
MALT©2006 Maths/Fractions Slide Show : Lesson 3

20. Here are some equivalent
fractions.
Can you work out a strategy
for deciding whether they
are equal?
25
4
10
MALT©2006 Maths/Fractions Slide Show : Lesson 3

21. Here are some equivalent
fractions.
Can you work out a strategy
for deciding whether they
are equal?
13
3
9
MALT©2006 Maths/Fractions Slide Show : Lesson 3

22. Use thinking time to discuss.
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12
1
4
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23. Use thinking time to discuss.
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2
5
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24. What ideas have you come
up with?
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2
5
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25. Explain your
strategy to the class.
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2
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26. There is a relationship
between the fractions using
dividing and multiplying.
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4
5
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27. What ever you do to
the top number . .
You must do to the
bottom number.
1
4
5
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MALT©2006 Maths/Fractions Slide Show : Lesson 3

28. What ever you do to the top
number . . You must do to the
bottom number.
1
4
5
20
divide by 5
divide by 5
MALT©2006 Maths/Fractions Slide Show : Lesson 3

29. 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
MALT©2006 Maths/Fractions Slide Show : Lesson 3

30. 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
MALT©2006 Maths/Fractions Slide Show : Lesson 3

31. 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
MALT©2006 Maths/Fractions Slide Show : Lesson 3

32. 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
MALT©2006 Maths/Fractions Slide Show : Lesson 3

33. What ever you do to the top
number . . You must do to the
bottom number.
multiply by 3
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15
3
5
multiply by 3
MALT©2006 Maths/Fractions Slide Show : Lesson 3

34. What ever you do to the top
number . . You must do to the
bottom number.
multiply by 2
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18
2
9
multiply by 2
MALT©2006 Maths/Fractions Slide Show : Lesson 3

35. What is the missing number?
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1
5
MALT©2006 Maths/Fractions Slide Show : Lesson 3

36. What is the missing number?
4
4
8
MALT©2006 Maths/Fractions Slide Show : Lesson 3

37. What is the missing number?
4
32
40
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38. Well done
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39. Sometimes you might need to work
out equivalent fractions in
three steps.
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40. Follow up task
H7 Textbook
Page 38
Questions 1,2,3
MALT©2006 Maths/Fractions Slide Show : Lesson 3

41. Answers
MALT©2006 Maths/Fractions Slide Show : Lesson 3

42. End of this
lesson, any
questions or
comments?
MALT©2006 Maths/Fractions Slide Show : Lesson 3