Block Posters. Block Posters is a web-based tool to which you can upload a high quality graphic then divide it into letter-sized chunks for printing. Print out each section and put them together on a poster board to make your own poster.
Applications for Education
Most teachers and students don't have ready access to printers that can handle poster-sized paper, but they do have access to standard letter-size printers. When you find a great infographic that you want to display in your classroom, Block Posters is a good tool to use to print it out. Want to create a giant jigsaw puzzle? Block Posters could be useful for that too.