Numbers are like Ogres - Layered
Last updated 10 May 2012, created 26 March 2012, viewed 1,234
Inspired by @GarrodMusto , this resource is intended for you to use as a way of showing the layering of the different sets of numbers.
Use the Shrek video to explain the whole thing about layers.
Incidentally, Z is used for integers as Zahl is the German word for Number.