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 ...
FORT LEE — For 10 seconds, a series of 50 random three-digit numbers flashed on the screen. After another second, abacus master Jeonghee Lee announced she'd finished the mental addition, correctly ...
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Princess Sumaya patronises 14th UCMAS National Abacus and Mental Arithmetic Competition | Jordan Times
AMMAN — HRH Princess Sumaya bint El Hassan, President of the Royal Scientific Society (RSS), patronised the opening of the 14th UCMAS National Abacus and Mental Arithmetic Competition, held at the ...
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