Lindy Walton
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First, be certain what you are looking at in the print copy. The letter you have copied looks like the alternative print form of the Greek letter theta, not a script regular theta. Does the print copy call it a script letter?
A table of the alternative forms of Greek letters is on page 34 of "An Introduction to Braille Mathematics." I have attached a photo of that table. The braille transcription of the alternative theta is (46, 4, 1456)
If you determine that the letter is truly a script regular theta, it is brailled as follows: (4, 46, 1456) The script indicator (dot 4) is brailled first, followed (unspaced) by the Greek letter indicator (dots 46), followed (unspaced) by the letter (theta, dots 1456).
See Nemeth Code Rules IV and V, and Appendix A (page 208).
I was quite sure that the mathematical symbol for the arrow was not correct, but was dreading spurring so many arrows. Your suggestion sounds wonderful to me. Thanks so much for all your help.
PattyWithout 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.
