ncon2011
Post on 20-Oct-2014
2.133 views
DESCRIPTION
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.TRANSCRIPT
National Conference on Numeracy 2011
NCoN2011Brunei Darussalam
Enhancing Numeracy Strategy in SPN21
Keynote Lecture 2
Developing Number Sense
What Does It Mean?Yeap Ban Har
Marshall Cavendish Institute Singapore
Princess Elizabeth Primary School
Fuchun Primary School
NCoN2011Brunei Darussalam
Vision2035
NCoN2011Brunei Darussalam
SPN21
NCoN2011Brunei Darussalam
tediouscomputationmemorization
procedures
mathematics?
NCoN2011Brunei Darussalam
daily-lifeapplications?mathematics
NCoN2011Brunei Darussalam
Aisha
Basri
110 g
290 g
180 g
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.
NCoN2011Brunei Darussalam
Collegio Dagoberto Godoy, Santiago de Chile
whydo wordproblems
NCoN2011Brunei Darussalam
Da Qiao Primary School, Singapore
whylearnfacts
multiplication
NCoN2011Brunei Darussalam
whylearnfacts
multiplication
NCoN2011Brunei Darussalam
whylearnfacts
multiplication
NCoN2011Brunei Darussalam
yx
11Find the value of given that that x + y = 15
and xy = 56.
xy
xy
yx
11
NCoN2011Brunei Darussalam
Find the sum of the marked angles.
NCoN2011Brunei Darussalam
NCoN2011Brunei Darussalam
NCoN2011Brunei Darussalam
(5 x 180o – 3 x 180o) ÷ 2
NCoN2011Brunei Darussalam
visualization
NCoN2011Brunei Darussalam
B R U N E I
NCoN2011Brunei Darussalam
B R U N E I
NCoN2011Brunei Darussalam
B R U N E I
NCoN2011Brunei Darussalam
B R U N E I
NCoN2011Brunei Darussalam
B R U N E I
NCoN2011Brunei Darussalam
B R U N E I
NCoN2011Brunei Darussalam
B R U N E I
NCoN2011Brunei Darussalam
B R U N E I
NCoN2011Brunei Darussalam
B R U N E I
NCoN2011Brunei Darussalam
B R U N E I
NCoN2011Brunei Darussalam
B R U N E I
NCoN2011Brunei Darussalam
B R U N E I
NCoN2011Brunei Darussalam
B R U N E I
NCoN2011Brunei Darussalam
B R U N E IWhich letter is counted 99?
NCoN2011Brunei Darussalam
B R U N E I1 2 3 4 5 611 10 9 8 7
12 13 14 15 1621 20 19 18 17
22 23 24 25 2631 30 29 28 27
32 33 34 35 36
NCoN2011Brunei Darussalam
M A T H S
NCoN2011Brunei Darussalam
x
12
34
56
7
8
9
0
NCoN2011Brunei Darussalam
1 2
5
6 0
x 34
7
8
9
NCoN2011Brunei Darussalam
51
? ?
51 + 1251 – 1751 ÷ 3
NCoN2011Brunei Darussalam
51
50 1
51 + 12
NCoN2011Brunei Darussalam
51
40 11
51 – 17
NCoN2011Brunei Darussalam
51
30 21 51 ÷ 3
NCoN2011Brunei Darussalam
988 – 800 989 – 800
212
100 100 12
2 1 21 2 3
101 1
NCoN2011Brunei Darussalam
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? Singapore Examinations and Assessment Board, 2005
23
71 – 23 = 60 + 11 – 20 – 3
71 – 23 = 40 + 8 71 – 23 = 48 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.
NCoN2011Brunei Darussalam
teachers’mindset professionalleadership
enhancinglearningdevelopment
instructional
Enhancing Numeracy Strategy in SPN21
Developing Number Sense
What Does It Mean?Yeap Ban Har
Marshall Cavendish Institute Singapore
Slides are available at www.banhar.blogspot.com
Woodlands Primary School
TERIMA
KASIH