[blindkid] subtracting in Nemeth braille

[Wagner, Gail Katona Y]

I believe NBP has a great Nemeth cheat sheet. 
How about using an abacus?
Gail

-----Original Message-----
From: blindkid-bounces at nfbnet.org [mailto:blindkid-bounces at nfbnet.org]
On Behalf Of Joy Orton
Sent: Friday, October 16, 2009 10:03 AM
To: blindkid at nfbnet.org
Subject: [blindkid] subtracting in Nemeth braille

Dear Friends,
Our third grader is doing subtraction with two and three digit numbers
and
some borrowing. In print, the number is crossed out and a new digit
written
in above it. In nemeth, you have to use a "start cancelling" sign and a
"stop cancelling" sign before and after each digit to be changed. I know
this takes lots of paper.

Right now our daughter is doing subtractions problems in her head.
Occasionally she gets mixed up, so the answer "21" might turn into "12."
She
knows her math facts, but two and three digit numbers are a lot to keep
up
with. She has been introduced to the "long" way to do it in Nemeth, but
she
does not seem comfortable with it. (Honestly right now she is missing no
more than one in 10 of this kind of problem. Maybe I'm hyper-sensitive.)

I don't know if her teachers are emphasizing writing it out. I know
right
now it's not a big deal, but I think it will be important in the future
to
have the skill of cancelling a digit or expression. I can think of
reducing
fractions as an example of when it is needed.

How have you dealt with this situation?
1. How much do I need to emphasize it?
2. How can I encourage the teachers and transcriptionist to help her
work on
it?

A related question: Is there an easy to read Nemeth guide or "cheat
sheet"
like the alphabet and contraction sheet? I have a 255 page binder from
BANA
with the whole code and all the rules, but it is hard to find what I
want.

Thanks for your help!
Joy Orton
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