print email comment close Abacus: The Art of Calculating With Beads URL: http://www.ee.ryerson.ca:8080/~elf/abacus/ Description: Provides extensive information on the history, construction, and use of the abacus (including detailed instructions on performing addition and subtraction functions), as well as comparisons of abacuses from different cultures. Features an interactive abacus that indicates the value of each column by clicking on the mouse to manipulate the beads. Also contains resources for teachers. Author: Fernandes, Luis Extra Keywords soroban, suan, pan Library of Congress Subject Headings: Abacus LII Database Information: Record 262 created by Liz Ruhland on 02/22/2000 Last modification on 07/31/2005 Published: 02/22/2000   Funding agency: California State Library LII Item ID: http://lii.org/cs/lii/view/item/262