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Lo, Steson; Andrews, Sally – Journal of Numerical Cognition, 2022
In Asia, some children are taught a calculation technique known as the 'mental abacus'. Previous research indicated that mental abacus experts can perform extraordinary feats of mental arithmetic, but it disagrees as to whether the technique improves working memory. The present study extended and clarified these findings by contrasting performance…
Descriptors: Mental Computation, Expertise, Short Term Memory, Schemata (Cognition)
Katayama, Osamu – Look Japan, 1993
Discusses the efforts of one Japanese company that makes abaci to demonstrate that the abacus continues to be a feasible alternative as a calculator in the elementary school mathematics curriculum. Argues that the abacus improves number sense, mental computation, and mathematics achievement for students who use the abacus. (MDH)
Descriptors: Calculators, Computation, Elementary Education, Foreign Countries
Reys, Robert E.; Nohda, Nobuhiko – 1994
This book, written by participants of a joint Japan-United States seminar, drawing upon years of classroom and research experience, examines how computation applies in basic and far-reaching ways, starting in early childhood and continuing throughout individuals' lives. The book presents both the Japanese and American views of computational…
Descriptors: Calculators, Computation, Cross Cultural Studies, Elementary Secondary Education

Koyama, Masataka – Hiroshima Journal of Mathematics Education, 1994
Tests of computational estimation ability (CEA), strategy (CES), and mental computation ability (MCA) of (n=124) fourth, (n=143) fifth, and (n=84) sixth graders found significant relationships between CEA and MCA and between CEA and CES but not between MCA and CES. (12 references) (Author/MKR)
Descriptors: Computation, Elementary Education, Elementary School Students, Estimation (Mathematics)

Reys, Robert E.; And Others – Journal for Research in Mathematics Education, 1995
Assessed attitude, computational preferences, and mental computational performance of 176, 187, 186, and 206 Japanese students in grades 2, 4, 6, and 8, respectively. Found wide ranges of performance on mental computation, that visual modes of presentation increased performance levels, and a narrow range of strategies. Contains assessments. (37…
Descriptors: Attitudes, Computation, Elementary School Students, Elementary Secondary Education

McIntosh, Alistair; And Others – Educational Studies in Mathematics, 1995
Study of the performance of nearly 2,000 students in grades 2 through 9 on a variety of mental computation tasks using visual and oral presentation found a wide variation in performance within the sample of each country at each grade level. (33 references) (MKR)
Descriptors: Cognitive Ability, Computation, Cross Cultural Studies, Elementary School Students
Reys, Barbara J.; Reys, Robert E. – 1993
While the emphasis and content of school mathematics differ little between Japan and America, by the time students reach junior high school, performance as measured by international studies differs greatly. This report provides a profile of the attitudes toward, strategies used, and performance on mental computation of Japanese students in grades…
Descriptors: Cognitive Style, Elementary Education, Elementary School Students, Foreign Countries