Math formula written on blackboard with chalk.
Contributor: Africa Studio
ID : 56259193
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Keywords
formula, written, blackboard, background, black, board, chalk, blackboard, class, classroom, close, closeup, concept, draw, drawing, education, educator, elementary, learn, lesson, mathematic, research, school, science, structure, study, instructing, teacher, teaching, text, texture, white, wood, writeRelated items
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