I have always been very afraid of tessellations, but now I realize that was just silly. I gave students a square, and had them cut a small shape out of the right side, then tape it on the left. Do the same thing with the top and bottom. Then watch them go! I had to guide a couple towards finding a shape, and we will just say that some kids had some crazy abstract shapes, but all in all, I was pleased with the results. Here are a few of my favorites.