A bestselling Level 1 Let’s-Read-and-Find-Out picture book, with a brand new look! Named a NSTA/CBC Outstanding Science Trade Book, this classic follows the fascinating metamorphosis of a caterpillar as it transforms into a butterfly. After a caterpillar comes to school in a jar, the children are captivated as it eats, grows and eventually becomes a beautiful Painted Lady butterfly. National Book Award finalist Deborah Heiligman and veteran illustrator Bari Weissman depict metamorphosis with all the wonder of those seeing the transformation for the first time.