No calculators allowed here — students who receive vision services from the Iowa Educational Services for the Blind and Visually Impaired took part in Iowa's first Abacus Bee on Saturday. The Abacus ...

This pamphlet gives instructions for using an abacus with five beads below and two above (as on a Chinese abacus). The beads shown on the cover are in the shape of those on a Japanese abacus and a ...

Do you love numbers? Do you want to become super-fast at math in your head? Then, abacus competitions might be just the thing for you! In India, many children take part in these fun and challenging ...