A lesson using Qwizdom Interactive Voting Systems/Student Response Systems

1. YEAR 4 EQUIVALENT FRACTIONS

2. Fractions Lesson 3 Understanding equivalent fractions Type your name and send:

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

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

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

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

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

8. For example 1 2 2 4

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? 1 2 2 4

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

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

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

13. Are they equivalent fractions ? 2 3 4 6

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

15. Are they equivalent fractions ? 1 4 3 12

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

17. Are they equivalent fractions ? 1 3 2 5

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

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

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

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

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

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

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

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

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

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

28. 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

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

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

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

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

33. 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

34. 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

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

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

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

38. 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

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 5

40. 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

41. 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

42. End of slide show