Ключевые слова: above, activity, adorable, background, brain, brainteaser, card, caucasian, challenge, child, childhood, class, crossword, day, desk, education, entertainment, game, girl, grid, hand, hobby, home, homework, kid, learn, leisure, little, logic, math, number, paper, pencil, popular, puzzle, school, schoolgirl, solution, solve, study, sudoku, table, tablet, think, top, view, white, write, writing, young,