Children playing Hide-and-Seek.http://amerihopealliance.com/blog/wp-content/uploads/2012/07/hide_and_seek.jpg
Have you ever played hide and seek?
If you have, you probably closed your eyes, and counted like this: "1, 2, 3, 4, 5, ... "
Anytime you count this way, you are using the Natural Numbers.
These numbers are called "natural" because they are the first ones we learn to count when we are little.
Now based on what you know about the Natural Numbers, what do you think about the number zero? Could the number zero be classified as a Natural Number?
