An Abacus (Childs toy)

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Size: 4912px × 7360px
Photo credit: © Bill Robinson / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: abaci, abacus, abacuses, addition, arithmetic, calculations, calculator, childrens, counting, education, educational, frame, learning, manual, mathmatics, methods, numbers, schooling, schools, simple, suanpan, teaching, timeless, toys, tutorial, tutoring