[duxuser] Re: nemeth question - subtracting negative numbers
- From: Katie.Culbertson@xxxxxxxxxxxxxxx
- To: duxuser@xxxxxxxxxxxxx
- Date: Wed, 5 Dec 2007 15:10:48 -0500
Thanks Davey.
I've seen what you described on other worksheets I've brailled and have
done the superscript. This is a teacher made worksheet and it is not
superscripted.
Katie Culbertson
Teacher of the Visually Impaired
Certified Orientation and Mobility Specialist
West Central Joint Services
227-8542 WCJS
243-5510 WCJS Fax
227-4894 Robey
243-5714 Robey Fax
"Davey Hulse" <davey@xxxxxxxxxxxxxxx>
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12/05/2007 02:56 PM
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[duxuser] Re: nemeth question - subtracting negative numbers
the Nemeth rules are finicky about how that double minus may be written
and how then it should be written in Braille.
Look carefully at the font of the second minus sign. Is it in any way
superscripted? More and more frequently negative numbers are showing up
with that minus sign being in superscript. In that case, the negative
sign needs to be supered. So, in Braille, the expression would be:
7-~-"1
with the tilde representing the superscript mark and the quote
representing the baseline marker necessary to indicate that the
superscript applied only to the minus sign.
Davey Hulse, CEO
Braille Plus, Inc.
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----- Original Message -----
From: Anthony Tibbs
To: duxuser@xxxxxxxxxxxxx
Sent: Wednesday, December 05, 2007 11:45 AM
Subject: [duxuser] Re: nemeth question - subtracting negative numbers
Hi Katie,
The person who indicated that you use only one subtraction symbol mustn't
have realized that doing that would change the nature of the question.
Mathetmatically speaking,
7 - -1 = ?
is the same as
7 + 1 = ?
You cannot "drop" one of the subtraction symbols, because it would change
the nature of the question. Instead, you would probably be best to
Braille it as
7 - (-1) = ?
... keeping both negative signs but putting the negative one in brackets.
This is coming from someone who used Nemeth throughout high school and
first-year university courses, but who has no official 'transcribers'
training or anything of the sort. I do know, however, that you can't just
"drop" a negative sign in the Braille and retain the same meaning!
Take care,
Anthony
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