Sal Murdocca

Their magic tree house takes Jack and Annie back to retrieve a lost story in ancient Greece, where they witness the original Olympic games and are surprised to find what girls of the time were not allowed to do.

Reprint: Originally published: New York : Random House, c2009. "First Scholastic printing, September 2009"--Verso t.p. "This edition is available for distribution only through the school market."--P.[4] of cover. Includes bibliographical references (p. 106) and index. A guide to ghosts discusses the history of human belief in them, famous hauntings in the United States and Great Britain, and some possible alternative explanations for them.

With the help of their third-grade teacher and classmates, Noelle and Todd discover who sent an anonymous letter to Amber Lee.

Uses illustrations of exponentially increasing peas to present the concept of numbers from one to a million, billion, trillion.

"A nonfiction companion to Magic Tree House #52: Soccer on Sunday"--

It's an ordinary morning in Walla Walla until Lulu, her teacher, the school nurse, and the principal are all infected by a word warp which makes them reduplicate everything they say.

Encyclopedia Brown presents more anecdotes including little known facts about sports, animals, fantastic discoveries, and other topics.

Discusses how a telephone works and the history of its development.

Jack and Annie explain about all the different types of dinosaurs.