Zero Is The Leaves On The Tree
It's easy to count three of something-- just add them up. But how do you count zero, a number that is best defined by what it's not?<br /><br />Can you see it?<br />Can you hear it?<br />Can you <i>feel</i> it?<br /><br />This important math concept is beautifully explored in a way that will inspire children to find zero everywhere--from the branches of a tree by day to the vast, starry sky by night.