Psle maths question set wrongly?
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I think that in a diagram like this, you can only ask for either the outer perimeter of the shaded figure or the inner perimeter for the shaded figure.
But dont think you can just ask the perimeter of the figure because this is not a 'simple' figure. (There is a hole in the middle.). http://en.wikipedia.org/wiki/Simply_connected
Other interesting PSLE Maths and Science questions can be found at: http://www.psle2008.blogspot.com/
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Hi Firepig,
There is nothing wrong with this PSLE Maths question.
It is clearly stated that it requires students to find the perimeter of the shaded figure ie the total length all round the shaded figure ie the circumference of the big circle and the 2 bigger arcs which form half of the circumference of the big circle and the 2 smaller arcs form the circumference of the small circle.
Hence, the perimeter of the shaded figure
= 1.5 x circumference of the big circle + circumference of the small circle.
Thank you for your kind attention.
Regards,
ahm97sic
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This year paper every pupil find it hard , including me as a student. I didn't have enough time to tackle the other questions as there was too little time given.
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Originally posted by FirePig:
I think that in a diagram like this, you can only ask for either the outer perimeter of the shaded figure or the inner perimeter for the shaded figure.
But dont think you can just ask the perimeter of the figure because this is not a 'simple' figure. (There is a hole in the middle.). http://en.wikipedia.org/wiki/Simply_connected
Other interesting PSLE Maths and Science questions can be found at: http://www.psle2008.blogspot.com/
The question and answer you posted is ok, don't see anything wrong. don't think p6 students are idiot, and they can verify the question if they feel the need to.
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Originally posted by Thecar:
This year paper every pupil find it hard , including me as a student. I didn't have enough time to tackle the other questions as there was too little time given.
it's very hard to rank the students in terms of how good they are. the easiest way is to set alot of question, and see who is better by seeing who is able to finish more.
Only the very best students can finish all correctly, but those that did not finish all should be fine too.
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Well, I still rmb that year I took my PSLE one of the Maths question was set wrongly. Everybody was awarded marks for that question =X
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Originally posted by TIB1049L:
Well, I still rmb that year I took my PSLE one of the Maths question was set wrongly. Everybody was awarded marks for that question =X
PSLE major exam, go through lots of proofreading, still can set wrong... sux lah
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ai ya.. nowadays ppl complain all is hard.. and want good marks HAHAAAA
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this yr many say very hard maths paper... ;/
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haha.
i realise another primary school student surf this forum!
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Originally posted by Jrz:
this yr many say very hard maths paper... ;/
How come every year people say this?
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Originally posted by TIB1049L:
Well, I still rmb that year I took my PSLE one of the Maths question was set wrongly. Everybody was awarded marks for that question =X
that was 2005 right. :Pi was in that year :D
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Originally posted by SBS7484P:
that was 2005 right. :Pi was in that year :D
Yeah. Hi-Five bud!
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Its no use having free marks for that question..
everybody gets the free marks, so its just as much as having no advantage.. lol.
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Originally posted by Jrz:
this yr many say very hard maths paper... ;/
sort of agree... ...
btw ... it's not always that ppl set wrongly the qn lah...
even if they set it wrongly, they will had told the ppl on de news like my batch... the lucky batch haha
still remember the mcq give away 2 mark.
but no matyter how hard the paper is, they will go and moderate the paper and set a limit quota of passes and a's... every year same one lah...
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Originally posted by hiphop2009:Yah i am a student from poi ching primary school.
haha.
i realise another primary school student surf this forum!
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lol, been ages since i took PSLE.
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Originally posted by TIB1049L:
Yeah. Hi-Five bud!
its about the how many squares in a rectangle?oh no. i rmb it had sth to do with a farm.. they ask a qn about stuff on a farm. hahha
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aiyo. every year also say hard..
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Do they announce out if the questions are set wrongly?
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finding the inner perimeter of the shaded figure is equivalent to finding the perimeter of the UNshaded figure. Since when perimeter can be split into two?
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perimeter still join together, where got break into two lah.
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Originally posted by mightygirl:
Do they announce out if the questions are set wrongly?
they do... On air... On news...Is a big thing lah... ... but the probility of such mistake is one in like since psle started... which is more den ten yrs...
de first mistake is my batch... 2 marks awarded to ALL
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out of curiosity... ...
to what standard can algerbra be used in PSLE maths?
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I think you use particular machanics to solve a distance time question also they have to mark you right. Any mathematically sound solution have to be accepted.
