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# Numeracy parent meeting

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• ### Numeracy parent meeting

1. 1. Numeracy Parent Information Session 2011 Presented by: Lisa Bonniface and Verna Cameron
2. 2. Introduction <ul><li>What is Numeracy? </li></ul><ul><li>Why do we teach this way? </li></ul>
3. 3. Numeracy Stages
4. 4. Knowledge and Strategy <ul><li>Knowledge: </li></ul><ul><ul><li>Facts you should automatically know </li></ul></ul><ul><ul><li>Provides the foundation for strategies </li></ul></ul><ul><li>Strategy: </li></ul><ul><ul><li>Using the facts you know to solve problems </li></ul></ul><ul><ul><li>How you solve problems - the mental process </li></ul></ul>
5. 5. Examples of some strategies that children use for addition and subtraction…
6. 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. 7. Stage 5: 14 - 6 = 14 - 4 - 2 = 8
8. 8. Stage 6 Examples <ul><li>Solve: </li></ul><ul><li>53 – 29 </li></ul><ul><li>Analyse the strategy you used to solve this based on what you see next. </li></ul>
9. 9. 53 - 29 <ul><li>Tidy Numbers using Compensation </li></ul>53 - 30 + 1= 24
10. 10. 53 - 29 <ul><li>Place Value Partitioning </li></ul>53 - 20 - 3 - 6 = 24
11. 11. 53 - 29 <ul><li>Reversibility </li></ul>29 + 1 + 20 + 3 = 53
12. 12. 53 - 29 <ul><li>Equal Additions </li></ul>= 24 53 29 1 1 54 30
13. 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
14. 14. Stage 7 Example: <ul><li>Solve using multiplication </li></ul><ul><li>27 + 54 </li></ul><ul><li>(9x3) + (9x6) so 9x9 = 81 </li></ul>
15. 15. Stage 8 Example Proportional Problem: <ul><li>If 30 children pay a total of 75 dollars in entry fees to Rainbows End, how much money will 18 children pay?” </li></ul>
16. 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. 17. Examples of some strategies that children use for multiplication and division…
18. 18. 8 x 6 Skip Counting: Stage 4 6 12 18 24 30 36 42 48
19. 19. 8 x 6 Repeated Addition: Stage 5 12 + 12 = 24 24 + 24 =48
20. 20. 8 x 6 Derived Multiplication: Stage 6 8 x 5 = 40 8 x 1 = 8
21. 21. 8 x 6 10 x 6 = 60 60 - (2x6) =48 Derived Multiplication: Stage 6 2 x 6 = 12
22. 22. 3 x 18 Tidy Numbers using Compensation 10 10 10 10 10 10 3 x 20 = 60 60 – (3 x 2) = 54
23. 23. Stage 7 Examples
24. 24. 3 x 18 Place Value Partitioning 30 + 24 = 54 10 10 10 3 x 10 = 30 3 x 8 = 24