Math lessons with the slide rule or abacus in elementary school

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Size: 5760px × 3840px
Photo credit: © Robert Kneschke / Alamy / Afripics
License: Royalty Free
Model Released: Yes

Keywords: abacus, abecedarian, abecedary, calculating, child, children, class, classroom, education, elementary, girl, kids, learn, lessons, lifestyle, math, maths, people, preschool, primary, pupil, rule, school, slide, student, students, young