Blackboard inscribed with scientific formulas and calculations in physics and mathematics.
Contributor: Tryfonov
ID : 200118749
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Keywords
abstract, algebra, background, black, blackboard, board, calculate, calculus, chalk, blackboard, class, classroom, college, complex, education, equation, exam, figure, formula, geometry, grunge, learn, lesson, line, mathematic, mathematic, minus, number, old, physics, problem, proof, school, science, scratch, scribble, signs, slate, solution, study, symbol, instructing, teacher, theory, vintage, white, writeRelated items
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