Aritm trains you in simple mental calculation. This program teaches its
users the addition, subtraction, multiplication, and division tables.
Aritm is also available for mobile phones w/ Java ME and web browsers w/
Java SE, see http://aritm.orbin.se/
This program is for the TI-82 STATS, TI-83, TI-83 Plus, TI-84 Plus
(including Silver Edition). Versions for TI-82 and TI-89 are coming.