1+1=3 written with chalk on slate shown by young female

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Size: 4779px × 3186px
Photo credit: © Björn Wylezich / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: 1+1=3, addition, arithmetic, basic, blackboard, board, calculate, calculation, chalk, chalkboard, education, elementary, error, female, frame, girl, grade, grammar, hint, information, math, mathematics, message, mistake, nostalgia, nostalgic, operation, school, show, slate, tablet, vintage, woman, wooden, writing, wrong