Be sure to check out the Dynamic Paper app from NCTM's Illuminations site. This app allows teachers to customize and print out graph paper, grids, number lines, tessellations, spinners, pattern blocks and more. Users control the number of sections in the spinner and colors. Likewise, users set the size of the sides of pattern blocks or the range of the number line.
Dynamic Paper is a great resource for teachers designing activities to support math learning. It's also an invaluable tool for teachers needing to differentiate classroom learning activities to meet the varied needs of learners in their classrooms.
Check out Dynamic Paper.