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# NCoN2011

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This is the keynote lecture presented at Brunei Darussalam's National Conference on Numeracy. The other two keynotes were delivered by professors from Japan and Australia.

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### NCoN2011

1. 1. National Conference on Numeracy 2011 NCoN2011<br />Brunei Darussalam<br /> <br />Enhancing Numeracy Strategy in SPN21<br /> <br />Keynote Lecture 2<br /> <br />Developing Number Sense What Does It Mean?<br />YeapBan Har<br />Marshall Cavendish Institute <br />Singapore<br /> <br />banhar@sg.marshallcavendish.com<br /> <br />Princess Elizabeth Primary School<br />Fuchun Primary School<br />
2. 2. NCoN2011<br />Brunei Darussalam<br />Vision<br />2035<br />
3. 3. NCoN2011<br />Brunei Darussalam<br />SPN21<br />
4. 4. NCoN2011<br />Brunei Darussalam<br />procedures<br />tedious<br />computation<br />memorization<br />mathematics?<br />
5. 5. NCoN2011<br />Brunei Darussalam<br />mathematics<br />daily-life<br />applications?<br />
6. 6. NCoN2011<br />Brunei Darussalam<br />Problem 1: Aisha puts some sugar in a bowl. Her bowl containing the sugar weighs 110g. Basri puts three times the amount of sugar that Aisha puts in an identical bowl. His bowl containing the sugar weighs 290g. Find the amount of sugar that Basri puts in his bowl. <br />110 g<br />Aisha<br />290 g<br />Basri<br />180 g<br />
7. 7. NCoN2011<br />Brunei Darussalam<br />why<br />do word<br />problems<br />CollegioDagoberto Godoy, Santiago de Chile<br />
8. 8. NCoN2011<br />Brunei Darussalam<br />why<br />learn<br />multiplication<br />facts<br />Da Qiao Primary School, Singapore<br />
9. 9. NCoN2011<br />Brunei Darussalam<br />why<br />learn<br />multiplication<br />facts<br />
10. 10. NCoN2011<br />Brunei Darussalam<br />why<br />learn<br />multiplication<br />facts<br />
11. 11. NCoN2011<br />Brunei Darussalam<br />Find the value of given that that x + y = 15 <br />and xy= 56. <br />
12. 12. NCoN2011<br />Brunei Darussalam<br />Find the sum of the marked angles.<br />
13. 13. NCoN2011<br />Brunei Darussalam<br />
14. 14. NCoN2011<br />Brunei Darussalam<br />
15. 15. NCoN2011<br />Brunei Darussalam<br />(5 x 180o – 3 x 180o) ÷ 2<br />
16. 16. NCoN2011<br />Brunei Darussalam<br />visualization<br />
17. 17. NCoN2011<br />Brunei Darussalam<br />B R U N E I<br />
18. 18. NCoN2011<br />Brunei Darussalam<br />B R U N E I<br />
19. 19. NCoN2011<br />Brunei Darussalam<br />B R U N E I<br />
20. 20. NCoN2011<br />Brunei Darussalam<br />B R U N E I<br />
21. 21. NCoN2011<br />Brunei Darussalam<br />B R U N E I<br />
22. 22. NCoN2011<br />Brunei Darussalam<br />B R U N E I<br />
23. 23. NCoN2011<br />Brunei Darussalam<br />B R U N E I<br />
24. 24. NCoN2011<br />Brunei Darussalam<br />B R U N E I<br />
25. 25. NCoN2011<br />Brunei Darussalam<br />B R U N E I<br />
26. 26. NCoN2011<br />Brunei Darussalam<br />B R U N E I<br />
27. 27. NCoN2011<br />Brunei Darussalam<br />B R U N E I<br />
28. 28. NCoN2011<br />Brunei Darussalam<br />B R U N E I<br />
29. 29. NCoN2011<br />Brunei Darussalam<br />B R U N E I<br />
30. 30. NCoN2011<br />Brunei Darussalam<br />B R U N E I<br />Which letter is counted 99?<br />
31. 31. NCoN2011<br />Brunei Darussalam<br />B R U N E I<br />1<br />2<br />3<br />4<br />5<br />6<br />11<br />10<br />9<br />8<br />7<br />12<br />13<br />14<br />15<br />16<br />21<br />20<br />19<br />18<br />17<br />22<br />23<br />24<br />25<br />26<br />31<br />30<br />29<br />28<br />27<br />32<br />33<br />34<br />35<br />36<br />
32. 32. NCoN2011<br />Brunei Darussalam<br /> MATHS<br />
33. 33. NCoN2011<br />Brunei Darussalam<br />9<br />1<br />2<br />7<br />x<br />3<br />4<br />8<br />5<br />6<br />0<br />
34. 34. NCoN2011<br />Brunei Darussalam<br />9<br />1<br />2<br />7<br />5<br />x<br />3<br />4<br />6<br />0<br />8<br />
35. 35. NCoN2011<br />Brunei Darussalam<br />51 + 12<br />51<br />51 – 17<br />51 ÷ 3<br />?<br />?<br />
36. 36. NCoN2011<br />Brunei Darussalam<br />51 + 12<br />51<br />50<br />1<br />
37. 37. NCoN2011<br />Brunei Darussalam<br />51<br />51 – 17<br />40<br />11<br />
38. 38. NCoN2011<br />Brunei Darussalam<br />51<br />51 ÷ 3<br />30<br />21<br />
39. 39. NCoN2011<br />Brunei Darussalam<br />988 – 800 <br />989 – 800 <br />212<br />100<br />100<br />12<br />0<br />1<br />1<br />1<br />2 1 2<br />1 2 3<br />
40. 40. NCoN2011<br />Brunei Darussalam<br />Problem 7: Each of the three cards shown is printed with a different whole number. The smallest number is 23. When these numbers are added two at a time, the sums are 61, 71 and 86. What is the largest number on the cards? <br />Singapore Examinations and Assessment Board, 2005 <br />23<br />71 – 23 = 60 + 11 – 20 – 3 <br />71 – 23 = 40 + 8 <br />71 – 23 = 48 <br />86 is the sum of the two largest number while 61 is the sum of the two smallest number. 71 must be the sum of the smallest and middle number.<br />
41. 41. NCoN2011<br />Brunei Darussalam<br />instructional<br />leadership<br />teachers’<br />mindset<br />professional<br />development<br />enhancing<br />learning<br />
42. 42.  <br />Enhancing Numeracy Strategy in SPN21<br /> <br /> Developing Number Sense What Does It Mean?<br />YeapBan Har<br />Marshall Cavendish Institute <br />Singapore<br /> <br />Slides are available at www.banhar.blogspot.com<br /> <br />T<br />E<br />K<br />R<br />A<br />I<br />S<br />M<br />I<br />A<br />H<br />Woodlands Primary School<br />