Tessellation

Examples of Tessellation:
http://www.mathsisfun.com/geometry/tessellation.html

Create your own shape to tessellate:
http://ejad.best.vwh.net/java/patterns/patterns_j.shtml

http://nlvm.usu.edu/en/nav/frames_asid_163_g_3_t_3.html

Be innovative...make shape that tessellate and yet is creative:
http://www.tessellations.org/slicemethod-ex1-1.htm

http://www.tessellations.org/diy-paper-a.htm

After you have gone through these activities, what conclusions can you draw to say that a shape can tessellate. (post them in the comment)