Simple math operation writing chalk on blackboard. Stock Image
by pashabo
Description
Simple math operation writing chalk on blackboard.
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Keywords
- mathematical
- symbol
- blackboard
- mathematics
- chalk
- school
- education
- white
- learning
- writing
- sign
- black
- number
- student
- plus
- elementary
- studying
- preschooler
- fun
- formula
- calculus
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- problems
- oops
- humor