Teacher Writing On Blackboard

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Keywords

chinese, teacher, teaching, university, classroom, writing, blackboard, one person, adult, people, male, man, adults only, campus, education, school, prof, speech, reading, chemist, physicist, scientist, instructor, beijing, china, east asia, asia, indoor, window, analysing, gesticulate, cooperation, teamwork, team, partnership, solution, holding, toothy smile, smiling, cheerful, happiness, joy, enjoyment, asking, studying, standing, pointing, learning, mathematic, chemistry, explaining, facial expression, fun, showing, goggles, book, waistcoat, vest, cravat, bow tie, photo, horizontal, chalk, color image, day, wisdom, half face, looking away

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