Ключевые слова: activity, algebra, authentic, boy, chalkboard, child, class, classroom, closeup, concept, connect, difficulty, education, elementary, exam, exemples, exercise, girl, hand, home, hometask, homework, homework boy, kid, learn, learning, lesson, logic, math, mathematic, mathematics, notebook, page, pencil, preschool, school, simple, skill, solving, study, studying, table, tablet, task, teach, test, think, toddler, write, writing,