Picture book is a piece of writing which is appropriate for children in its theme and form, and it is a part of children's literature. It is usually a child's first book and an important linguistic and art work in which illustrations are used to complete, enrich and elaborate on the story. Its educational role is to provide the child with basic knowledge about the world around us, to help develop child's cognitive processes and the understanding of causality when it comes to things, events and phenomena as well as to foster the development of speech. It is important to point out that picture books enrich a child's vocabulary and help in developing the love of reading. Sentences in a picture book have to be clear, meaningful and easy to understand, that is, they have to be suitable for children. Text needs to convey a message that a child can understand. Illustrations that accompany the text have to be simple, clear, aesthetically pleasing and should suit the messages that the picture book conveys in order to develop a child's feeling for beauty. Picture book should be made with the child's safety in mind which means that no lead or otherwise toxic paint or ink should be used and sharp edges should be avoided. The first picture book, called The Children's Picture Book, was made in Germany in 1972. The picture book called Farm Animals is considered to be the first Croatian picture book and it was made in 1885. Picture book is an important book in a child's life and one way of implemeting it in the teaching process is to create a picture book as a class by combining Croatian and art classes.