1. Numeracy Parent Information Session 2011 Presented by: Lisa Bonniface and Verna Cameron

3. Numeracy Stages

5. Examples of some strategies that children use for addition and subtraction…

6. Stage 4: I am learning to add by counting on when the larger number is given first. 8 + 3 = 1 2 3 4 5 6 7 8 9 10 11 8 + 3 = 11 9, 10, 11

7. Stage 5: 14 - 6 = 14 - 4 - 2 = 8

13. Summary of Strategies Tidy numbers using Compensation 53 - 30 + 1 53 - 29 Place Value Partitioning 53 - 20 - 9 Equal Additions 54 - 30 Reversibility 29 + ? = 53

16. Strategies for solving Proportional problems: 30:75 is the same as 2:5 therefore multiply both by 9 18:45 30:18 = 10/6 10 parts of 75 =7.5 p/ part 6 parts @ 7.5 p/part = 45 18 /30 is the same as 3/5 so it is 3/5 of 75 which is 45 because 1/5 is 15 30 children gives $75 1 child gives $2.50 18 x 2.5 18 children gives $45.00

17. Examples of some strategies that children use for multiplication and division…

18. 8 x 6 Skip Counting: Stage 4 6 12 18 24 30 36 42 48

19. 8 x 6 Repeated Addition: Stage 5 12 + 12 = 24 24 + 24 =48

20. 8 x 6 Derived Multiplication: Stage 6 8 x 5 = 40 8 x 1 = 8

21. 8 x 6 10 x 6 = 60 60 - (2x6) =48 Derived Multiplication: Stage 6 2 x 6 = 12

22. 3 x 18 Tidy Numbers using Compensation 10 10 10 10 10 10 3 x 20 = 60 60 – (3 x 2) = 54

23. Stage 7 Examples

24. 3 x 18 Place Value Partitioning 30 + 24 = 54 10 10 10 3 x 10 = 30 3 x 8 = 24

25. Proportional Adjustment:

26. 3 x 18 3 x 9 3 x 9

27. 6 x 9 = 54 Proportional Adjustment: 3 x 18 6 x 9 x 2 ÷ 2

28. Possible Multiplicative Strategies Place Value 5 x 30 = 150. And 5 x 6 = 30. So 150 + 30 = 180 Doubling and Halving. Double 5= 10, half 36= 18. So 10 x 18 = 180 Written Form 36 X 5 180 5 x 36 = Tidy Numbers I know 5 x 40 = 200. 200 - (4x5) = 180.

32. Any Questions?