This is a Power Point presentation created by Mark Robuck of 7 slides showing examples and a Venn diagram of the number sets or number groups (i.e. counting, whole, integer, rational, irrational, and real numbers). Because I currently teach 6th-9th grade math I do not go beyond the reals.
I like to use this both to introduce a new number set and to review all of the sets for my Algebra class. As a review I use the entire slide show. If I am introducing new sets, like for my 6th grade math class, I will start at the beginning to review what sets they already know and stop at the new set being introduced. Then when the next set is introduced in a later class I do the same, stopping at the next set.
I usually will write examples of each set inside the diagram, but it looked too cluttered in the slide show. This is why the examples are at the top; however, during class I will add them in on my SMART board if the class needs a more clear explanation.