This image names the different layers of rings of a tree.

This is probably a familiar picture of a tree. One of the earliest understandings given to children is the age-old tree and how counting the rings gives away how long the tree has lived.

The other understanding children are provided is the width of the ring can provide an understanding to when a drought or low rainfall occurred. The wider a particular tree ring the most rain that fell that year. The narrower the ring the less the tree grew and the less rain that fell.