Ключевые слова: app, application, asian, boy, child, children, class, classroom, closeup, computer, concentrated, desk, devices, digital, diligent, education, elementary, gadgets, group, holding, internet, junior, kids, knowledge, learning, lesson, math, middle, online, pc, people, person, preteen, reading, reopen, school, schoolboy, schoolchildren, schoolkids, students, studying, tablet, tech, teen, teenagers, together, using, virtual, web, website,