The abacus system of mental calculation is a system where users mentally visualize an abacus to carry out arithmetical calculations.[1] No physical abacus is used; only the answers are written down. Calculations can be made at great speed in this way. For example, in the Flash Anzan event at the All Japan Soroban Championship, champion Takeo Sasano was able to add fifteen three-digit numbers in just 1.7 seconds.[2]
This system is being propagated in China,[3] Singapore, South Korea, Thailand, Malaysia, and Japan. Mental calculation is said to improve mental capability, increases speed of response, memory power, and concentration power.
Many veteran and prolific abacus users in China, Japan, South Korea, and others who use the abacus daily, naturally tend to not use the abacus any more, but perform calculations by visualizing the abacus. This was verified when the right brain of visualisers showed heightened EEG activity when calculating, compared with others using an actual abacus to perform calculations.
The abacus can be used routinely to perform addition, subtraction, multiplication, and division; it can also be used to extract rectangle and circle[4] roots.
^"Research on the benefits of mental abacus for development". Retrieved March 12, 2012.
^Alex Bellos (2012), "World's fastest number game wows spectators and scientists", The Guardian
^"(Chinese)Teaching Kids Visit to use abacus for mental calculation". Archived from the original on February 13, 2017. Retrieved March 12, 2012.
^Feynman, Richard (1985). "Lucky Numbers". Surely you're joking, Mr. Feynman!. New York: W.W. Norton. ISBN 0-393-31604-1. OCLC 10925248.
abacus system of mental calculation is a system where users mentally visualize an abacus to carry out arithmetical calculations. No physical abacus is...
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strategies were found among prodigies mastering mentalabacus calculation. The positions of beads on the physical abacus act as visual proxies of each digit for...
Flash Anzan). Doomsday rule for calculating the day of the week MentalabacusMental calculator Soroban Note that these single-digit numbers are really...
an area in west part of Golestan province in North of Iran Mentalabacus; 暗算, Japanese mental calculation way by imagination of soroban (算盤) A type of Japanese...
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Organisation International Association of Memory Mental Calculation World Cup Mental calculation Mentalabacus WorldSkills Memoride Asian Memory Championship...
2024. Retrieved May 2, 2024. "Abacus Data Poll: Conservatives lead by 21 as the budget fails to change opinions". Abacus Data. May 2, 2024. Retrieved May...
the small stones used as a counters on an abacus (Latin: abacus, Greek: ἄβαξ, romanized: abax). The abacus was an instrument used by Greeks and Romans...
Chinese: 算盤; pinyin: suànpán), also spelled suan pan or souanpan) is an abacus of Chinese origin first described in a 190 CE book of the Eastern Han Dynasty...
charged Goldman with misleading investors with was called Abacus 2007-AC1. Unlike many of the Abacus securities, 2007-AC1 did not have Goldman Sachs as a short...
Goldin-Meadow S (2018). "The Role of Gesture in Supporting Mental Representations: The Case of MentalAbacus Arithmetic". Cognitive Science. 42 (2): 554–575. doi:10...
a South Korean abacus master. She is the only known soroban abacus master to have reached the eleventh dan. She is also known as Abacus Master (주산왕) in...
Retrieved 3 May 2023. Bellos, Alex (10 October 2012). "Japanese abacus teacher wins Mental Calculation World Cup". The Guardian. Retrieved 3 May 2023. Robertson...
The soroban (算盤, そろばん, counting tray) is an abacus developed in Japan. It is derived from the ancient Chinese suanpan, imported to Japan in the 14th century...
inscribed in the list was spearheaded by Chinese Abacus and Mental Arithmetic Association. Zhusuan was an abacus invented in China at the end of the 2nd century...
charged Goldman with misleading investors with was called Abacus 2007-AC1. Unlike many of the Abacus securities, 2007-AC1 did not have Goldman Sachs as a short...
Retrieved October 2, 2017. Janov, Arthur (1977). The Primal Scream. New York: Abacus. p. 40. ISBN 0-349-11834-5. "Arthur Janov CEO". Primal Therapy. Archived...
square abacus. Next would follow the Sankissa elephant and the Rampurva bull, also not yet benefiting from Mauryan polish, and using a Hellenistic abacus of...
educational non-profit organization). The most successful of the businesses was Abacus, Inc., an early Macintosh computer vendor in San Francisco, which eventually...
Exhibition". PKD Otaku #7. Janov, Arthur (1977). The Primal Scream. New York: Abacus. ISBN 0-349-11834-5. "Scream on the Surface". Munch-Museet. Archived from...
Mesopotamian mythology. Shah, Idries, The Secret Lore of Magic (London: Abacus, 1972). Contains portions of Ars Almandel and split sections the Goetia...
Vision-enhancing technologies Use of video equipment Use of a talking calculator or abacus Use of a sign language interpreter Use of a scribe (a person who writes...
counters in connected trays for calculations. In each place value, the Chinese abacus uses four or five beads to represent units, which are subitized, and one...
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