22 printable or digital pages of Sudoku to teach your students to use LOGIC and REASONING. Each page has four six-by-six grids with fourteen missing numbers (1, 2, 3, 4, 5 and 6) or letters (A, B, C, D, E and F). Students strategize to find the missing numbers in each row, column and rectangle. If you are interested in developing critical thinking skills, then take a look at the Preview to see six sample pages. PRINT: I created a PDF version that you can download on your computer and print