This product is a set of printable, color-coded grids for working math problems. I have included a page of grids (and an example problem) for each of the four basic operations: addition, subtraction, multiplication, and division. These grids are especially useful for students who have trouble writing their numerals in columns and for those who have trouble tracking a vertical column with their eyes. The grids are also useful for singling out and explaining specific steps in the calculation process. Even if your students are not having trouble, the grids are cheery and bright and will make doing math homework more enjoyable.