I'm ashamed of the maths standard in Singapore....
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Eh hyuuga.. what happened to your old nick ar??Originally posted by HyuugaNeji:eh if you dont assume those are similar triangles, you also cannot assume you can flip triangle b meaning the middle line is not straight.
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Is it? I didn't watch the news....Originally posted by DriftingGuy:All they have to do is include a footnote "diagonal of A and B forms a straight line"
But then again this is an mcq question..
Picked the image up from HWZ.
So, I assumed all three answers are part of the options? -
CanOriginally posted by DriftingGuy:All they have to do is include a footnote "diagonal of A and B forms a straight line"
But then again this is an mcq question..
But as I see the qn again, the students are expected to find the length themselves..
Somemore now say is MCQ, 2 mks and ask them to solve like this? -
No. not just that. It still wont solve the problemOriginally posted by DriftingGuy:All they have to do is include a footnote "diagonal of A and B forms a straight line"
But then again this is an mcq question.. -
Aha i finally realised something..Originally posted by HyuugaNeji:No. not just that. It still wont solve the problem
MOE also wants to test the common sense ability of its students..
It wants students to realise that a 2 mark mcq question cannot think until so cheem one.. just flip the triangle and get the answer -
And this is stupid, 2 mks qn ask them like crazyOriginally posted by DriftingGuy:Aha i finally realised something..
MOE also wants to test the common sense ability of its students..
It wants students to realise that a 2 mark mcq question cannot think until so cheem one.. just flip the triangle and get the answer
I dunno what's in for essay qn that is abt 12 mks? -
hmm i thought was let the height of A be x and the length of A be y then use the areas to get 2 equations, solve for x and y then use x and y to get teh area of C?
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You can't assume that they are equalOriginally posted by hisoka:hmm i thought was let the height of A be x and the length of A be y then use the areas to get 2 equations, solve for x and y then use x and y to get teh area of C? -
The problem is.. this is psle question.. cannot use algebra to solve..Originally posted by hisoka:hmm i thought was let the height of A be x and the length of A be y then use the areas to get 2 equations, solve for x and y then use x and y to get teh area of C?
Its like you can choose between a car or a bicycle to travel a country.. but unfortunately this country don't have petrol -
And c may not necessary be a rectangle either...and even if you assume c is rectangle, you put x*y to get area of c. Then you add area of a,b,c and you realise it is not 45cm2!!!!!!!!Originally posted by hisoka:hmm i thought was let the height of A be x and the length of A be y then use the areas to get 2 equations, solve for x and y then use x and y to get teh area of C? -
Talking abt algebraOriginally posted by DriftingGuy:The problem is.. this is psle question.. cannot use algebra to solve..
Its like you can choose between a car or a bicycle to travel a country.. but unfortunately this country don't have petrol
If I am not wrong, it is thought in Sec Sch -
Ya.. but a lot of students see it as a foreign language.. not very confident on modelling it for use.. some are still stuck in the pri sch way of solving .. at least for the lower sec that isOriginally posted by sbst275:Talking abt algebra
If I am not wrong, it is thought in Sec Sch -
Actually, algebra is very easyOriginally posted by DriftingGuy:Ya.. but a lot of students see it as a foreign language.. not very confident on modelling it for use.. some are still stuck in the pri sch way of solving
It is only the mind that makes it not -
I 'caplock' itOriginally posted by DriftingGuy:Eh hyuuga.. what happened to your old nick ar?? -
That's why it's hard to tuition primary school kids.
Most questions first time you see you know use algebra, but then the kid never learned algebra. And so, you have to draw some models, which basically illustrate what you are thinking using algebra, but sometimes, it's just so frustrating when you want to put it in a manner that they understand.
It's like a bicycle and a car. You know a car takes you to your destination faster, but the car got no petrol no LPPL have to use bicycle.... -
state your assumption on top b4 you start lor so simple university never teach you arh?Originally posted by HyuugaNeji:And c may not necessary be a rectangle either...and even if you assume c is rectangle, you put x*y to get area of c. Then you add area of a,b,c and you realise it is not 45cm2!!!!!!!!
anyway lower lvl education i think this one can assume one.
if dun use algebra dunno what to use le leh -
What talking you? Ya i never say need to assume wat. I support the use of algebra if anything be they primary school kids or even nursery kids.Originally posted by hisoka:state your assumption on top b4 you start lor so simple university never teach you arh?
anyway lower lvl education i think this one can assume one.
if dun use algebra dunno what to use le leh -
Anyway, this question is wrong because i can just anyhow say two values for area of a and b. Says a = 8cm2, b = 20cm2. For the same 15cm by 6cm diagram, determine the area of c.
ONLY correct ans BASED ON DIAGRAM is area of A=1/2*2*5=5
area of b=1/2*4*10=20
area of c= 2*10=20.
Overall= 5+20+20=1/2*15*6=45cm2 -
Oi .. u use my example... copyright u noeOriginally posted by CoolMyth:That's why it's hard to tuition primary school kids.
It's like a bicycle and a car. You know a car takes you to your destination faster, but the car got no petrol no LPPL have to use bicycle.... -
yay!!!! i got the c=20 answer!!! haha....
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SINGAPORE : The Singapore Examinations and Assessment Board has apologised for a mistake in a question in this year's PSLE Mathematics paper.
But students will not suffer from the mistake. The Board said it would award two marks to all students, irrespective of their responses.
Shaun Loh, 12, and his friend were among many stumped by this year's PSLE Maths paper.
One of the questions - question number 13 - required them to calculate the area of Rectangle C - based on given area of Triangles A and B.
"I understood the question but could not solve it no matter how hard I tried. I tried to solve it by guessing the length and breath of the rectangles and triangles. I skipped the question as I knew I would not have time for the other questions if I carried on working on that one," he said.
In a statement, the Singapore Examinations and Assessment Board said although the answer can be worked out using the given data, the question itself was flawed.
The mistake lies in an inconsistency between the dimensions of the rectangle and the areas of the two triangles.
Based on this data, "it is mathematically not possible to draw such a figure."
Singapore parents have long complained about the PSLE Maths paper, which they say gets more difficult every year.
But the Board's mistake in a PSLE examination question - believed to be the first-ever here - left many parents baffled.
Lisa Lee, Shuan's mother, said: "At this point, I'm just wondering how this could have happened after many rounds of vetting and how this could be prevented in the future. And also I hope the examiners would be more lenient in marking the papers."
The Board is giving two marks to all students - regardless of their answers to the question.
Some tutors said the move was fair.
Some schools also say students won't be too badly affected as students had always been advised not to spend too much time on multiple choice questions. - CNA/de -
lol not fair leh...see ah, that question was wrongly worded, students spent lots of time trying to solve it, might cause some to panic and dun have enuff time to finish the rest...
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Giving everybody 2 marks or not giving everybody the 2 marks leaves every student at the status quo what. No one student is better off or worse off since I believe the grades are marked on a curve.
It only sounds nicer to the parents when they say everybody will get the 2 marks. -
And the three answers I wrote out, 20, 22 and 25 are part of the options!
Now I need to find one method so that the answer is 28 and indeed, all students who answered will get 2 marks, no need MOE to intervene. -
If i am not wrong, the grades are not marked on curve but rather your results. The aggregate score you get will be the score that gets you to the sec school. If everyone score 290-300aggregate score, then RI and RGS's entry score will be adjusted to 295Originally posted by charlize:Giving everybody 2 marks or not giving everybody the 2 marks leaves every student at the status quo what. No one student is better off or worse off since I believe the grades are marked on a curve.
It only sounds nicer to the parents when they say everybody will get the 2 marks.