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Math geometry formulas on background. Mixed media
Related tags:
- calculus
- trigonometry
- equation
- math formula
- math class
- math teacher
- mathematics background
- mathematics
- algebra
- teacher board
- green board
- class board
- school board
- blackboard
- chalk drawing
- green chalkboard
- classroom board
- chalk board
- writing board
- classroom blackboard
- classroom
- school blackboard
- school class
- chalk
- formula
- school classroom
- class background
- math symbols
- teacher teaching
- classroom background
- class
- classroom teacher
- chalk background
- school teacher
- minus
