Mary Pope Osborne

Jack and Annie are joined by Teddy and Kathleen as they travel to the snowy Land-Behind-the-Clouds, where they search for the eye of the Ice Wizard and attempt to help Merlin and Morgan.

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Getting the facts behind the fiction has never looked better. Track the facts with Jack and Annie!!
 
When Jack and Annie got back from their adventure in Magic Tree House Merlin Mission #12: Eve of the Emperor Penguin, they had lots of questions. What do penguins eat? Why do they huddle together...

"A nonfiction companion to Magic Tree House #52: Soccer on Sunday"-- Shares up-to-date information, photos and illustrations in a companion to Soccer on Sunday that offers additional facts about everything from the history of soccer and the sport's most notable players to the traditions surrounding the World Cup. --Publisher's description.

The magic tree house whisks Jack and Annie away to Australia where they must save some animals from a wildfire.

Jack and Annie learn amazing facts about six history-changing individuals, including Susan B. Anthony, Mahatma Ghandi, Martin Luther King, Jr., John Muir, Florence Nightingale ,and Harriet Tubman.

Jack and Annie look at knights, armor, and life in a castle.

"When Jack and Annie came back from their adventure in 'Magic Tree House #10: Ghost Town at Sundown,' they had lots of questions. Why do we call the Old West wild? What is a ghost town? What are cowboys? Who was Billy the Kid? It's time to be a 'fact tracker' with Jack and Annie!"--Back cover.

An introduction to rain forests, examining their different layers, plants and animals, and human residents, looking at some of the products that originate in the rain forests, and discussing the need to preserve the tropical environments.

"Jack and Annie use the magic tree house to travel back in time to 1947 Brooklyn, New York, where they pretend to be batboys at Jackie Robinson's first game with the Brooklyn Dodgers against the Boston Braves"--

In the next Magic Tree House® Fact Tracker, track the facts about World War II—with Jack and Annie!
 
When Jack and Annie came back from their adventure in Magic Tree House Super Edition #1: World at War, 1944, they had lots of questions. How did World War II begin? Why were so many innocent people killed? What was D-Day? Find out the answers to these questions and more as Jack and Annie learn all about one of...