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

2. MALT©2006 Maths/Fractions Slide Show : Lesson 3
These numbers are called
fractions 1 2 3 15 12 22 2 3 5 6 4 7
MALT©2006 Maths/Fractions Slide Show : Lesson 3

3. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Here are some
mixed numbers 5 4 9 2 1 3 3 2 5 2 1 4 1 6 8
MALT©2006 Maths/Fractions Slide Show : Lesson 3

4. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Today’s lesson looks at
Equivalent fractions 6 8 3 4
MALT©2006 Maths/Fractions Slide Show : Lesson 3

5. MALT©2006 Maths/Fractions Slide Show : Lesson 3
WALT : to understand equivalent fractions and decide if fractions are equal 6 8 3 4
MALT©2006 Maths/Fractions Slide Show : Lesson 3

6. MALT©2006 Maths/Fractions Slide Show : Lesson 3
In the word equivalent
there is the root word
equal 6 8 3 4
MALT©2006 Maths/Fractions Slide Show : Lesson 3

7. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Fractions which are said to be equivalent are equal to each other. 6 8 3 4
MALT©2006 Maths/Fractions Slide Show : Lesson 3

8. MALT©2006 Maths/Fractions Slide Show : Lesson 3
For example 2 4 1 2
MALT©2006 Maths/Fractions Slide Show : Lesson 3

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

10. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Yes!
These fractions are equal.
These are equivalent fractions. 2 4 1 2
MALT©2006 Maths/Fractions Slide Show : Lesson 3

11. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Can you tell if the following fractions are equal?
Are they equivalent fractions? 1 2 3 6
MALT©2006 Maths/Fractions Slide Show : Lesson 3

12. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Yes these fractions are equal.
They are equivalent fractions. 1 2 3 6
MALT©2006 Maths/Fractions Slide Show : Lesson 3

13. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Are they equivalent fractions? 2 3 4 6
MALT©2006 Maths/Fractions Slide Show : Lesson 3

14. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Yes they are
equivalent fractions. 2 3 4 6
MALT©2006 Maths/Fractions Slide Show : Lesson 3

15. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Are they equivalent fractions? 1 4 3 12
MALT©2006 Maths/Fractions Slide Show : Lesson 3

16. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Yes they are
equivalent fractions. 1 4 3 12
MALT©2006 Maths/Fractions Slide Show : Lesson 3

17. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Are they equivalent fractions? 1 3 2 5
MALT©2006 Maths/Fractions Slide Show : Lesson 3

18. MALT©2006 Maths/Fractions Slide Show : Lesson 3
No, they are not equal.
They are not equivalent fractions. 1 3 2 5
MALT©2006 Maths/Fractions Slide Show : Lesson 3

19. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Here are some equivalent fractions.
Can you work out a strategy for deciding whether they are equal? 2 8 1 4
MALT©2006 Maths/Fractions Slide Show : Lesson 3

20. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Here are some equivalent fractions.
Can you work out a strategy for deciding whether they are equal? 4 10 2 5
MALT©2006 Maths/Fractions Slide Show : Lesson 3

21. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Here are some equivalent fractions.
Can you work out a strategy for deciding whether they are equal? 3 9 1 3
MALT©2006 Maths/Fractions Slide Show : Lesson 3

22. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Use thinking time to discuss. 1 4 3 12
MALT©2006 Maths/Fractions Slide Show : Lesson 3

23. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Use thinking time to discuss. 5 10 1 2
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24. MALT©2006 Maths/Fractions Slide Show : Lesson 3
What ideas have you come up with? 5 10 1 2
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25. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Explain your
strategy to the class. 5 10 1 2
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26. MALT©2006 Maths/Fractions Slide Show : Lesson 3
There is a relationship between the fractions using dividing and multiplying. 5 20 1 4
MALT©2006 Maths/Fractions Slide Show : Lesson 3

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

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

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

30. MALT©2006 Maths/Fractions Slide Show : Lesson 3
What ever you do to the top number . . You must do to the bottom number.
divide by 3 1 4 3 12
divide by 3
MALT©2006 Maths/Fractions Slide Show : Lesson 3

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

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

33. MALT©2006 Maths/Fractions Slide Show : Lesson 3
What ever you do to the top number . . You must do to the bottom number.
multiply by 3 9 15 3 5
multiply by 3
MALT©2006 Maths/Fractions Slide Show : Lesson 3

34. MALT©2006 Maths/Fractions Slide Show : Lesson 3
What ever you do to the top number . . You must do to the bottom number.
multiply by 2 4 18 2 9
multiply by 2
MALT©2006 Maths/Fractions Slide Show : Lesson 3

35. MALT©2006 Maths/Fractions Slide Show : Lesson 3
What is the missing number? 10 1 5
MALT©2006 Maths/Fractions Slide Show : Lesson 3

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

37. MALT©2006 Maths/Fractions Slide Show : Lesson 3
What is the missing number? 4 32 40
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38. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Well done 4 32 40 5
MALT©2006 Maths/Fractions Slide Show : Lesson 3

39. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Sometimes you might need to work out equivalent fractions in
three steps. 48 64 6 8 3 4
MALT©2006 Maths/Fractions Slide Show : Lesson 3

40. MALT©2006 Maths/Fractions Slide Show : Lesson 3
Follow up task
H7 Textbook
Page 38
Questions 1,2,3
MALT©2006 Maths/Fractions Slide Show : Lesson 3

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

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