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 Post subject: Re: GL Math Question - 2
PostPosted: Tue Sep 10, 2019 1:13 pm 
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Joined: Mon Jun 18, 2007 2:32 pm
Posts: 7483
Location: East Kent
Surferfish wrote:
yoyo123 wrote:
I would say they get a 1/3 of a whole pizza each.

This sort of ‘trap’ in the question is very common in SATs


So that means that regardless of the number of pizzas, the answer would always be a third? That doesn't make sense.



True, now I’ve read it through again, I agree.
It is badly worded, my immediate answer was 2/3, then I second guessed myself into 1/3.
Pity the poor child who is trying to get through lots of questions in a short space of time.


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 Post subject: Re: GL Math Question - 2
PostPosted: Tue Sep 10, 2019 1:20 pm 
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kenyancowgirl wrote:
But there are two pizzas and each pizza is going to be shared equally between the three of them.


The question as posted by the OP does not state that. It was:

"Karen, Amrit and Sam are going to share two pizzas equally between them. What fraction of a whole pizza should each of them have?"

Nothing about each pizza shared equally.


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 Post subject: Re: GL Math Question - 2
PostPosted: Tue Sep 10, 2019 2:18 pm 
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Joined: Wed May 09, 2007 2:09 pm
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Location: Solihull, West Midlands
Badly worded questions are the bane of my life - especially as often those with a logical/ mathematical mind will be the first to spot (and be worried by ) the ambiguity. IN fact the whole topic of the language we use to describe mathematical concepts is a fascinating one, and often wrong assumptions about what children understand by particular words and phrases are made to the detriment of good learning.

In fact (thinking aloud) one important reason for learning to use abstract mathematics to describe things is that it shouldn't be ambiguous, unlike the slippery language we use in everyday life....


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 Post subject: Re: GL Math Question - 2
PostPosted: Tue Sep 10, 2019 2:37 pm 
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Joined: Mon Oct 21, 2013 7:59 pm
Posts: 6295
Surferfish wrote:
kenyancowgirl wrote:
But there are two pizzas and each pizza is going to be shared equally between the three of them.


The question as posted by the OP does not state that. It was:

"Karen, Amrit and Sam are going to share two pizzas equally between them. What fraction of a whole pizza should each of them have?"

Nothing about each pizza shared equally.


I know...and I said at the beginning that it is badly worded. The bit I have put in bold can be interpreted different ways - the way most of us are interpreting it, with the emphasis on sharing the two pizzas, or the way the question appears to want interepreted where they seem to be focusing on sharing equally with the TWO pizzas being secondary - this is indicated by my addition of the word "each" ie the question wants the chld to consider each pizza separately and share it separately. It only makes sense if you consider it as the first pizza shared and the the second pizza shared, rather than two pizzas together shared.

Hence me saying it is worded in such a way that it is not clear - I have studied English to a high level and that is English gymnastics right there - not what a 10 year old should have to unpick.


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 Post subject: Re: GL Math Question - 2
PostPosted: Tue Sep 10, 2019 4:34 pm 
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Joined: Fri Mar 10, 2017 4:06 pm
Posts: 643
Yes I agree, a very badly worded question.


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