This includes 8 PDF file posters, so they should open for everyone.. 4 of the posters give EXAMPLES of different word problems for each operation: addition, subtraction, division, and multiplication. Under each poster, I hang the addition clipboard poster with the clue words associated with that operation. I teach my kids that "if you have to FIND the total" you must add or multiply, but "if you are GIVEN the total", you must subtract or divide. I hang the multiplication and addition on one side of the board, and the subtraction and division on the other side. The posters show the parts/total diagram and the multiplication diagram commonly used in everyday math, because I think they are helpful. I had my posters printed at a shop in color and enlarged a bit and I put a border trim around them. It looks great and can't wait to use them to help my students tackle word problems next year!