Ключевые слова: achievement, backgrounds, black color, blackboard, blank, business, chalk, challenge, complexity, concepts, concepts topics, connect, connection, copy space, decisions, directly above, finishing, handwriting, horizontal, ideas, inserting, jigsaw piece, jigsaw puzzle, leisure games, part of, pattern, planning, problems, puzzle, shape, single word, solution, strategy, teamwork, text, the end, togetherness, white color,