Making mistakes and wrong answer concept. Hand wiping math formula off blackboard in classroom at school. Student or teacher correcting.

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Making mistakes and wrong answer concept. Hand wiping math formula off blackboard in classroom at school. Student or teacher correcting incorrect calculation on chalkboard.

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Size: 5397px × 3632px
Photo credit: © Tero Vesalainen / Alamy / Afripics
License: Royalty Free
Model Released: No

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