1190 Albany Avenue
Brooklyn, New York 11203
May 28, 1984

The Arcadian
3626 Morrie Drive
San Jose, California, 95127

Dear Robert Fabris:

Enclosed is a tape with the math tutor program that I mentioned in my last 
letter to you.  It's in Astro-Basic, 1.8K.  The instructions are in the 
program and can be called from the keypad.

I cannot advertise for the month of June (More Code Trainer, etc.) as I will 
not be available to make up additional tapes and documentation.  I've left 
enough to cover any project demand, which incidentally, has dropped off 
significantly.  When I return, I will prepare a sale to see if demand can be 
stimulated.

Whatever happens, terms of sales, I hope to continue to support the Arcadian 
with programs.  I'm working on another one that I will polish off when I 
return.  In the meantime, I'm sure your readers will enjoy the enclosed 
Fraction Tutor.  Because it only deals with whole numbers, it is ideally suited 
her Tiny Basic.  Also the large type style of the astrocade provides for an 
appealing display that even the younger students can enjoy.  Finally, the 
program is a welcome departure from the usual addition/subtraction tutors.  
Until next time...

Sincerely,

Fred Rodney

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* FRACTION/STUDY by Fred Rodney, 1984
1190 Albany Avenue; Brooklyn, N.Y. 11203

The instructions are REM statements that follow the program.  To access them 
enter RUN GO, and press 0, as selected level.  Simple tests of divisibility for 
quick mental confrontations follow: a number is divisible by

2 if the last digit is even.
3 if the sum of the digits until one remains is divisible by 3.
4 if the last two numbers are divisible by 4.
5 if the last digit is 0 or 5.
6 if 2 and 3 are.
7 if .. ? (no easy rules).
8 if the last 3 digits are divisible by 8.
9 if the sum of the digits until one remaining is 9.
10 if it ends in zero.

31 . SOME FRACTIONS MAY BE
32 . SIMPLIFIED OR REDUCED
33 . BY DIVIDING THE NUME-
34 . RATOR AND DENOMINATOR
35 . BY THE HIGHEST COMMON
36 . DIVISOR. (OR FACTOR)
37 .
38 . THE DIVISOR MUST BE A
39 . POSITIVE WHOLE NUMBER
40 .
41 . (PRESS KEY TO GO ON)
42 . ->RANGE OF A&B VALUES:
43 . 1 TO 9 (LEV. 1)
44 . 1 TO 99 (LEV. 2)
45 . 1 TO 999 (LEV. 3)
46 .
47 . YOUR SCORE IS THE
48 . PERCENTAGE OF RIGHT
49 . ANSWERS .YOU NEED 10
50 . RIGHT TO SCORE.
51 .
52 . ->(PRESS KEY TO BEGIN)
54. GOOD LUCK!