The purpose of this descriptive study is to point out the importance of using illustrations as a visual communication language. The study is composed with some sections: importance of illustrations as materials, and use and significance of illustrations in global perspective. Illustrations and different kinds of images are used for education purposes from the very beginning of human’s life. Our brain is sensitive to pictures even before we can speak. A child begins perception of the around world as a number of objects since babies can think only non-abstractly. That is the reason why illustrations are used to educate us and to develop our imagination. Similarly, illustrations are widely used for presentation of complicated scientific, engin...