Teaching and Learning of the Nemeth Braille Code
Teaching and Learning of the Nemeth Braille Code n Signs and Symbols of Comparison n Miscellaneous Signs and Symbols
Signs and Symbols of Comparison Space Before and After n Equal to n Less than or equal to n Greater than or equal to = < ≤ > ≥ . k "k "k: "k. k. 1. 1: . 1. k
Examples n n n n ab≥cd Ab. 1: cd If a<0, then |a|= -a , if a "k #0, !n |a|. k -a Is 1 m > or < 1 yd? , is #1 m. 1 or "k #1 yd 8 x y X. 1. k y
Negation Space Before and After n Not equal to ≠ /. k n Not less than < /"k n Not greater than > /. 1
Examples of negation n n ? 3/5# /. k ? 12/15# x<4 n. X /"k #4 n
Other Comparisons Space Before and After n Approximately equal to ≈ n Similar to ~ n Identically equal to ≡ n Congruent to n Ratio : "1 n Proportion : : @: @: @: _l @: . k ; 2
Examples n n of other comparisons 1 ft ≈ m #1 ft @: @: ? 1/3# m 4 ≡ 29(mod 5) #4 _l #29(mod #5) angle ABC angle DEF Angle , a, b, c @: . k angle , d, e, f 5 : 6 : : 15 : ? #5 "1 #6 ; 2 #15 "1 =
Miscellaneous Signs and Symbols Cents ₵ @c n Dollars $ @s n At (space on each side) @ @a n Percent % @0 n Prime ' n Double Prime '' n
Examples n n n 24₵ $37. 59 5 bags @ 86₵ 12% y 6 4 of miscellaneous signs and symblos #24@c @s 37. 59 #5 bags @a #86@c #12@0 y' #6'4''
More Miscellaneous Signs and Symbols Since n Therefore n Number sign, pounds n Slash for “per” n Tally Mark | n Ditto Mark n @/ , * #. # / _/ _ ” , '
Added Note for Tally Marks The Multipurpose Indicator, dot 5, must be used between a tally mark and the PI. Why?
Examples n n 55 mi/hr Tally marks #55 mi_/hr He needs 2# of hamburger. , he ne$s #2. # ( hamburg]4 -2 x+1>7 x<-3 @/ -#2 x+1. 1 #7 , * x "k -#3 Here is a tally for the cars: ||||. , "h is a t, y =! c>s 3 ____"_4
Added Notes for Ditto Marks n n n A space is left on each side of the ditto mark. The symbol is centered under the word or numerals, etc. to be duplicated. This may necessitate altering the normal spacing in the line above the ditto marks.
Example of the Ditto Mark n 500+100 =600 ” ” ” 700 ” ” ” 800 #500 + 100. k #600 , ' , ' #700 , ' , ' #800
Additional Rules n n The contractions for to 6, into 96, and by 0 may not be used before any of these miscellaneous symbols The PI must be used before punctuation that follows any of these miscellaneous symbols
Assignment p. 61 all np. 64 all n
- Slides: 16