Lindy Walton
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Without seeing a print example, I can only guess, but your description sounds like what the Nemeth code calls "Modifiers of Higher Order" in Section 87. Use the 5-step rule for transcribing modified expressions. The arrow will be the first order (modified directly over) and the dot will be the second order (two directly-over indicators). Use a contracted arrow and dots 16 for the dot.
Interesting problem!
It makes sense to me to transcribe what the student will be brailling in the plot--that is, no numeric indicators and yes use 456 to represent the bar. In context, the lack of numeric indicators should not be confusing.I was hoping we could transcribe this structure using braille dots entirely, but in order to be perfectly clear these parentheses should be tooled. The solution is shown in the attached file.
Regardless of their meaning and purpose (here they are chemical arrows, not bonds) these arrows must be drawn in order to convey the circular layout of the print drawing.
The errata/addenda to the lesson book is posted on the NFB website--here is the URL:
https://nfb.org/math-transcribing
**BUT** you may want to wait as a new release is about to be approved. The target date for the update is 2-1-2013.Yes, this expression is a mixed number as the Nemeth code defines one. You can see examples of a radical in the numerator of a *simple fraction in the lesson book, page 116, example (10) in Section 83.b. Yours will use mixed number fraction indicators instead of simple fraction indicators.
Your questions are important; thank you for posting them.
In the Nemeth instruction manual, you can assume that "blocked" examples are taken from the middle of a paragraph. You will notice that other examples in this section illustrate new paragraphs both in the print example and the simbraille transcription.
In example (3), if the expressions were embedded you are correct that it would not make sense to begin a new line with each expression. In this case, however, the expressions are displayed. Each displayed expression begins in the primary display cell, cell 3.
Hi Susan. In the example you posted, the text in the remark in the yellow box explains exactly what the "BIG -->" indicates. You can omit "BIG -->" without comment. Of course, the remark is talking about the print sign and may have no real meaning regarding the braille symbol, but you should not omit the remark.
The change was made in order to place each mathematical expression in the primary display cell. None of these expressions has a runover. The example on page 121 shows five expressions separated by commas; the example on page 123 shows four expressions separated by commas. The original publication treats the displayed material as one expression, which is incorrect.
Patty, I see what you mean and am glad you pointed this out. I got distracted trying to optimize the number of cells available on the line. The displayed format I used here is not the Nemeth Code format, but is borrowed from BF2011, which is why there is a blank line before and after the displayed material. However, BF 9.2.2.f does say that "the adjusted left margin for displayed material in exercises is cell 5." So, YES, please indent the nested list section two more cells to the right: 5-11; 7-11; 9-11. I still would retain the blank lines to set it apart. We may hear some disagreement to this point ...
In a minute I will correct my original reply and the attachment, so those who read this in the future will get the right information. Thanks, Patty!
