http://www.netvouz.com/url/5a204e9da4afc53ae6ad086e848e51dc?feed=rss Info about a link http://webhome.idirect.com/~totton/abacus/ Tutorial with instructions on how to use an abacus using an abacus instruction manual. A history of the abacus, how to use a Japanese soroban using techniques taught by Takashi Kojima. Techniques for Chinese abacus. Azet Tue, 08 Aug 2006 18:19:36 GMT