Ключевые слова: background, black, blackboard, board, chalk, chalkboard, coaching, college, concept, conceptual, course, desk, draw, drawing, educate, education, font, hand, handwriting, handwritten, know, knowledge, learn, learning, lecture, letter, lettering, more, nobody, school, sketch, studies, studing, study, studying, success, table, teach, teaching, text, training, understand, university, white, word, write, writing,