This 8.5 x 11 notebook is a dual layout notebook. It's designed with 5x5 graph paper on one side and lined paper (college ruled) on the other side. Graph paper (coordinate paper, grid paper, squared paper or math paper) has many uses: designing projects drawing maps for board/video/roleplay games playing pen and pencil games designing floorplans, tiling or yard landscaping planning embroidery, cross stitch or knitting The inclusion of alternating pages with lined paper makes it easier to take notes to aid the illustrations, designs, maps etc.