colorful wooden beads at an abacus, a manual calculation machine

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Size: 2812px × 4279px
Photo credit: © Carmen Hauser / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: abacus, addition, bead, calculation, calculator, childhood, close-, colorful, counting, detail, education, equipment, learning, machine, manual, mathematics, object, preschool, rows, school, shot, simplicity, studio, subtraction, teaching, tool, toy, traditional, wooden