Teacher writing various primary school maths formula on chalkboard.
Contributor: RomanR
ID : 310439850
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Keywords
education, blackboard, school, chalk, blackboard, teacher, lesson, study, 2, learn, board, instructing, addition, classroom, mathematic, primary, black, solution, white, elementary, number, calculate, cognition, answer, calculation, symbol, summing, plus, mathematic, class, equation, arithmetic, 4, drawing, sum, hand, background, children, concept, holding, alphabet, text, write, work, exam, 1, 2, 4Related items
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