Ключевые слова: adult, african american, asian, back to school, black woman, blank screen, blur, boy, caucasian, cheerful, children, class, classmates, classroom, copy space, device, digital tablet, education, elementary age, emotion, gadget, girl, happy, indoors, inside, interracial, joyful, kids, knowledge, lesson, multicultural, multiethnic, people, positive, profession, pupils, school, schoolboy, schoolchildren, schoolgirl, schoolkids, selective focus, smiling, teacher, technology, together, woman, work,