Ключевые слова: background, child, children, comic, crazy, cute, education, emotions, expressions, face, female, fun, funny, geometric, geometry, girl, happy, isolated, kid, kids, knowledge, learn, learning, mathematics, measure, portrait, preteen, pretty, pupil, ruler, school, school girl, schoolchildren, schoolgirl, schoolkid, student, studio, study, studying, teen, teenage, teenager, yellow, young,