Package: Xabacus
In Debian: yes
Web: http://www.tux.org/~bagleyd/abacus.html
Description
Xabacus lets one manipulate a chinese abacus with the mouse
Presentation in French :
http://logiciels-libres-cndp.ac-versailles.fr/article.php3?id_article=53&var_recherche=xabacus