Ключевые слова: 1, adorable, alone, back, background, blackboard, caucasian, chalk, childhood, children, class, classroom, cognition, college, cute, education, educational, elementary, emotion, emotional, european, expression, face, girl, horizontal, learn, learning, lesson, lettering, look, mouth, notebook, panorama, person, preteen, pupil, school, schoolchild, schoolgirl, schoolkid, shocked, signs, space, study, surprised, symbol, teenage,