Ключевые слова: abc, activity, alphabet, arrear, background, block, blocks, bricks, communication, concept, creativity, cube, cubes, debt, educate, education, educational, elementary, english, game, home, idea, indebtedness, knowledge, language, learn, leisure, letter, letters, nobody, object, objects, obligation, orthography, plastic, play, playful, playground, read, reading, school, spelling, table, text, toy, word, writing,