What Shape Is It - Looking at Nature Author:Bobbie Kalman This book is appropriate for ages 4 to 7 years. Almost every shape can be found in nature! The sun, moon, and Earth are circles and spheres. The wings of butterflies contain triangles, the cells of honeybees are hexagons, and the hood of the hooded mantis has a diamond shape. This book explains both flat shapes and 3-D shapes and shows amazing e... more »xamples of them all.« less