Ключевые слова: adjust, adorable, caucasian, chalkboard, cheerful, child, classroom, cute, education, emotion, equations, eyeglasses, girl, happy, indoors, joyful, kid, knowledge, learning, lesson, letters, look at camera, mathematic, maths, numbers, one person, pleased, positive, preadolescent, preteen, pupil, school, schoolchild, schoolgirl, schoolkid, shirt, signs, smiling, study, symbols, touch, white,