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The books of the "Cribs" series will help preschoolers prepare their hands for writing, train their fingers, develop elementary graphic and calligraphic skills, learn to perform tasks accurately, navigate lines and squares, and follow a given direction, The program is designed to help children learn to read and write, to understand the slope and shape of lines, letters, numbers, shapes, to develop an eye for detail, to develop the ability to follow a pattern, and to write individual elements of numbers and letters clearly, beautifully and accurately, to combine letters into words and shapes and lines into pictures.