Trainee solve math problems written in chalk on the blackboard
Trainee solve math problems written in chalk on the blackboard
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Photo credit: © Sergey Nepsha / Alamy / Afripics
License: Royalty Free
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Keywords: activity, algebra, blackboard, calculating, cha, chalk, complexity, drawing, education, efficiency, expertise, formula, green, hand, handwriting, human, intelligence, learning, lecture, mathematical, mathematics, number, people, prodigy, profess, professor, school, science, sign, skill, solution, student, symbol, teacher, teaching, text, university, wisdom, writing