Readable from the back of the room.
Start with a high-resolution map, diagram, or exported slide. The preview shows how the image crosses each page and estimates whether it will stay clear at the selected size.
For a temporary display, keep the overlap and page labels on. Trim one edge at each join, line up the repeated image, and tape the finished rows from behind.
If the poster will be laminated, assemble it first and use several smaller laminating pouches, or ask the school print room whether it accepts tiled sheets.
