2. Fractions Unit 2 Understanding equivalent fractions

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

4. Here are some mixed numbers 3 2525 1414 6868 1313 4 9 1 2 2 5

5. Today’s lesson looks at Equivalent fractions 3434 6868

6. WALT : to understand equivalent fractions and decide if fractions are equal 3434 6868

7. In the word equivalent there is the root word equal 3434 6868

8. Fractions which are said to be equivalent are equal to each other. 3434 6868

9. For example 1212 2424

10. 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? 1212 2424

11. Yes! These fractions are equal. 1212 2424 These are equivalent fractions.

12. Can you tell if the following fractions are equal? Are they equivalent fractions? 1212 3636

13. Yes these fractions are equal. They are equivalent fractions. 1212 3636

14. Are they equivalent fractions? 2323 4646

15. Yes they are equivalent fractions. 2323 4646

16. Are they equivalent fractions? 1414 3 12

17. Yes they are equivalent fractions. 1414 3 12

18. Are they equivalent fractions? 1313 2 5

19. No, they are not equal. They are not equivalent fractions. 1313 2 5

20. Here are some equivalent fractions. Can you work out a strategy for deciding whether they are equal? 1414 2 8

21. Here are some equivalent fractions. Can you work out a strategy for deciding whether they are equal ? 2525 4 10

22. Here are some equivalent fractions. Can you work out a strategy for deciding whether they are equal? 1313 3 9

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

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

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

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

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

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

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

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

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

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

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

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

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

36. What is the missing number? 10 1 5

37. What is the missing number? 4 4 8

38. What is the missing number? 4 32 40

39. Well done 4 32 40 5

40. Sometimes you might need to work out equivalent fractions in three steps. 6 8 48 64 3 4