Dark black chalk board with mathematical formulas on it
Contributor: Sved Oliver
ID : 425274455
Keywords
algebra, background, black, blackboard, board, chalk, blackboard, class, classic, classroom, college, concept, conceptual, dark, drawing, education, equation, formula, geometry, learn, learning, lesson, mathematic, mathematical, mathematic, number, school, science, scientific, student, study, symbol, instructing, text, texture, university, white, writing, calculation, calculate, plus, solution, exam, summing, test, elementary, teacherRelated items
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