2009 PSLE Mathematics

donkhead333 SG · 2009-10-24T03:08:20+00:00

A P5 Math Olympiad student is taught how to solve maths questions using simultaneous equations (elimination and substitution methods), form algebraic equatio...

donkhead333 SG

From: http://sg.news.yahoo.com/cna/20091010/tap-464-parents-arms-psle-mathematics-pa-231650b.html

Why are parents nowadays so kiasu..and doesn't the grading scheme follow a bell curve? So why is there a cause for worry if the paper is truly that difficult..?

MyPillowTalks SG

i still cannot get 68sweets

donkhead333 SG

Alamak why move here..

I also found the standard to be a little high...

But if everyone does badly, you just have to be better to get a better grade/score

Every single year confirm got parent make a mountain out of a molehill one

yiha093 SG

english not good just say la, top student got top in english comprehension anot ?

u canot compre the qn no matter how good maths is also die.

2cents. dun flame me la. wthhhh

then later if paper easy

parents ask why all a* nvr get * insert mark* =.=

stupid right?

<(0))>< SG

i still cannot get 68sweets

use aglebra to solve

but then i didnt learn aglebra when i was in p6

yiha093 SG

use aglebra to solve

but then i didnt learn aglebra when i was in p6

i think my year have leii =.=

4 years ago .

kenn3th SG

Solution

Let Jim's Ratio of Sweets to Chocolates be x

Ratio therefore would be: x : 7x

Let Ken's Ratio of Sweets to Chocolates be Y

Ratio therefore would be: y: 4y

since Jim ate 12 sweets, Ken Ate none.

(x+12)=y ---(1)

therefore 2y = Ken's total sweets

Since Jim did not eat any of his chocolates, Ken ate 18.

(4y+18)= 7x ---(2)

from (1)

x= y-12

sub into (2)

4y+18 = 7(y-12)

4y+18=7y-84

102=3y

y = 34

2y =68 (solved)

TrueHeart SG

i think my year have leii =.=

4 years ago .

Hi Yihao,

I believe that it is usual practice for PSLE to have one or two very difficult questions which are meant to separate the most outstanding students from the others. These questions will usually requires students to think out of the box, or consists of lower secondary-level mathematics such as algebra.

I hope this tell you why 1 or 2 questions which requires algebra appears in some of the years for PSLE.

Cheers.

[email protected]_F3V3R SG

My Sis finish leh~

gosh! she ish smart!!!!!!!!!!!!!!!!

yiha093 SG

My Sis finish leh~

gosh! she ish smart!!!!!!!!!!!!!!!!

a) like u ?

b) unlike u ?

choose 1 . xD

donkhead333 SG

I just don't understand, year after year parents make a big fuss with the paper being too difficult.

I think they have to come to terms with the fact that either

a) Paper difficult, everyone is taking the same paper

b) The student is "buay kan" lor.

Should watch Mr.Brown's podcast on PSLE questions being too difficult; epic

nganmatthias SG

Pretty disappointed with myself. BTW the last 2 questions are 4 marks each and not 5 marks.

donkhead333 SG

Honestly, I think that making the last 1/2 questions the toughest is a good idea.

It separates the best students and critical thinkers from a pool of good students.

Getting an A* should not be a problem if you score well for all the questions except for the tough ones.

Cheers!

yiha093 SG

i nvr study also can get A already. good student should be able to get A* la...

just 15more marks righT?

yiha093 SG

Hi Yihao,

I hope this tell you why 1 or 2 questions which requires algebra appears in some of the years for PSLE.

Cheers.

halo mister.

i also nvr complain about the qn what, why is that u said directed at me

wAt3v3r SG

Ken

S I__I
C I__I__I__I__I 18 I

Jim

S I__I 12 I
C I__I__I__I__I__I__I__I

In Jim's model, 1 unit + 12 sweets = 1/2 of Ken's original number of sweets = 1 unit in Ken's model. Therefore, Ken's model will become: (since chocolates is 4 times sweets + 18)

S I__I 12 I
C I__I 12 I__I 12 I__I 12 I__I 12 I 18 I

Similarly, 4 units + 18 chocolates in Ken's model is equivalent to the 7 units of chocolates in Jim's model, which is 1/2 of Jim's original number of chocolates.

From the model above,

4 units + (4X12) + 18 = 7 units
4 units + 66 = 7 units
3 units = 66
1 unit = 22
1/2 of Ken's sweets = 1 unit + 12
= 22 + 12
= 34
Ken's number of sweets = 34 X 2 = 68

TrueHeart SG

halo mister.

i also nvr complain about the qn what, why is that u said directed at me

Hi Yi Hao,

I am sorry if you find my reply to have been offensive, but please be assured that my only intention is to let you understand the reason behind why algebra only appears in some of the years for PSLE.

Cheers.

dkcx SG

Pretty disappointed with myself. BTW the last 2 questions are 4 marks each and not 5 marks.

As long as you done your best, no need be disappointed

yiha093 SG

Hi Yi Hao,

I am sorry if you find my reply to have been offensive, but please be assured that my only intention is to let you understand the reason behind why algebra only appears in some of the years for PSLE.

Cheers.

NONO , relax, its nth offensive la.

~.~

pawcupine SG

MOE should have made it clear to parents that the scores will be moderated according to the cohort's performance. the intro of calculators had surely reduced the chances of careless mistake n the students would have saved time calculating answer. that is probably why qns are set to make them think more to compensate. also, it can better differentiate the better ones from the best. tell me, if there is maybe 40 pupils getting 100%, who can tell who's better? with influx of foreign students, surely the standard has to be raised some way