Sarah has a magic mouse friend named Satchelmouse. One day she makes a set of dinosaurs out of clay. Satchelmouse brings them to life and transports Sarah and the dinosaur to the jungle. They have some narrow escapes and Sarah helps one of the dinosaurs that she didn't model right in the first place. The book does not teach much about dinosaurs and seems to tell the story too fast. It's hard to understand some of the transitions. ( )

Satchelmouse and his friend show great promise as the hero and heroine of a series of books. Sarah and her school friends are working with modeling clay, creating a dinosaur world. Sarah makes a diplodocus whose neck is too short and whose one leg is shorter than the others. When Satchelmouse blows his magic trumpet, they find themselves in a dinosaur world, where a young diplodocus is running from a fierce tyrannosaurus. Sarah and Satchelmouse help the dinosaur out by lengthening his neck and his foot.