Combined poster book system and method

A flat sheet of paper, or other thin flexible material, has information printed on one side in the form of a plurality of discrete panels or areas of text or images, while the entire other side is taken up by a large-scale, poster-like pattern. The panels or areas of text or images, are defined by crease lines created by folding the sheet of material. These creases are formed using a perpendicular fold method described in detail in this application. Each fold is perpendicular to the previous fold, creating a grid-like pattern, with each panel in the grid pattern containing a discrete quantity of text or images. When the invention is at its most folded state it has a relatively compact size. As the invention is unfolded, the panels of text or images are revealed in a specific sequence in order to tell a story or communicate some other type of sequentially ordered information. Once the entire sequence of information has been unfolded, the poster-like pattern on the back side of the sheet of material is unfolded and can be viewed and/or displayed.