For this task we were supposed to take a magazine, and lay a tracing paper over three pages creating a grid. We were to use both right-hand pages and left-hand pages.
The paged I chose were based on a three-column grid, and on the only thing that changed on the three pages was the bottom margin on one of the pages. I was surprised about this because I thought the three pages looked really different at first. But when I traced the grid over it I could clearly see that it was the same layout in almost the entire magazine.