colored wooden abacus to learn how to count numbers on a decimal or ten basis

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Size: 5584px × 2862px
Photo credit: © FC_Italy / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: abacus, ball-frame, base, basis, count, counter, counting, counting-frame, decimal, educating, education, instruction, math, mathematics, maths, school, schooling, teaching, ten, toy, tuition, vintage