Ключевые слова: adult, arm, blackboard, board, caucasian, chalk, cheerful, child, classroom, communicate, communication, conversation, copybook, elementary, expression, face, friendly, girl, give, grade, group, happy, holding, indoor, infant, junior, kid, learn, learner, little, people, person, portrait, positive, primary, pupil, school, schoolchild, schoolgirl, small, smile, student, study, studying, talk, teacher, watching, woman, young, youth,