Harper Trophy 9780064451291 From Caterpillar To Butterfly (let's-read-and-find-out A caterpillar comes to school in a jar. The class watches the caterpillar each day as it grows and changes. Soon, it disappears into a hard shell called a chrysalis. Then the chrysalis breaks, and a beautiful butterfly flies out of the jar! This is a perfect beginner's guide to the mystery of metamorphosis. Outstanding Science Trade Books for Children 1997 (NSTA/CBC) 0064451291