ancient wooden abacus to learn how to count inside the classroom of a school

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Size: 4573px × 4334px
Photo credit: © FC_Italy / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: abaci, abacus, abacuses, arithmetic, ball-frame, calculating, calculator, count, counting, decimal, education, equipment, frame, instrument, learn, learning, math, mathematics, maths, retro, school, system, tool, vintage, wood, wooden