"A brief 250,000,000 years of history from hadrosaurs to hairy humans... Two hundred fifty million years ago, there wasn't an upright, two-legged human primate in sight. So who were the real first settlers in America? Think giant cockroaches, scaly, spiney, scary dinosaurs, rats the size of cows, mammoths with 10-foot tusks, and all kinds of prehistoric animals that crawled, lumbered, and stalked across North America before we even evolved!"--Cover,...

Introduces the animals that lived in North America before the arrival of the first people, and discusses the disappearance of the dinosaurs, the Ice Age, and early humans and their effect on the continent's animal life.

Luke confronts his father, Darth Vader, as the Rebel fleet attempts to destroy the Death Star.

When the Invisible Inc gang makes computer greeting cards to raise money to invite an author to school, they solve the mystery of the author's real name.

Brian and his younger sister Penny try to catch the culprit who has been sabotaging School Spirit Week.

Luke confronts his father, Darth Vader, as the Rebel fleet attempts to destroy the Death Star.

This book takes you behind the locked doors of Philadelphia's State House during the history-making summer of 1787. You will meet the key delgates and find out what is going on.

Chip, an invisible boy, and his friends investigate the mysterious disappearance of yogurt-covered raisins, mixed nuts, and ginger snaps from their classroom.

Although Bobby's father thinks that he might be expelled just like his older brother, with the encouragement of a new fifth-grade teacher, Bobby tries to channel his penchant for humor into a learning experience.

Robert and Sam suspect their weird new neighbor is really Frankenstein.