Zero

          Zero is sad.  When she looks at herself, she only sees a big hole.  How can a number worth nothing become something?  Zero tries to change herself into other numbers, but feels deflated when it doesn't work.  She tries to find value by impressing other numbers, but that just leaves everyone bent out of shape.  With the help of the other numbers, Zero discovers her own value.  
     This picture book is a wonderful metaphor about self-esteem and the value our lives bring to others.  It can also be used as a math book for children learning about place value and the power of zero.