Book excerpt: A fun and engaging way for young children to figure out concepts and solving problems on his or her own. Rookie Readers (Ages 5-7) have provided entertaining, high-quality introductions to reading for more than a generation. Each title features full-color, often hilarious illustrations and engaging stories that always involve a young child figuring out concepts or solving problems on his or her own. From boulders to buildings, from mountains to caves, smooth or jagged, rocks are all around us. With the help of a genuine rock-loving guide, young readers will enjoy sorting out all the different kinds of rocks, where they are found and how we use them.