Mary Pope Osborne

When Jack and Annie arrive at a Roman camp on a mission to learn how to be a fierce Roman warrior, their assignment is complicated by a mysterious man on a black horse.

"When the magic tree house whisks Jack and Annie back in time, they land in the tallest tree in Yosemite, California where they join nature conservationist, John Muir, and US President Teddy Roosevelt on a historic trip through the woods"--

"The magic tree house whisks Jack and Annie away to Greenland where they discover they've traveled back in time to meet Lief Erikson"--

Learn about giant pandas and other endangered species.

Introducing the first Magic Tree House® Super Edition--and Jack and Annie's most dangerous mission ever! With a longer story and additional facts and photographs, this thrilling, first Super Edition in the Magic Tree House series is an adventure no reader will want to miss!

The magic tree house has taken Jack and Annie back in time to England in 1944. England is fighting for its life in World War II. Before long,...

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 #2: The Knight at Dawn, they had lots of questions. How were castles built? What was it like to live inside a castle? How...

Lions and tigers and bears—oh, man!
Jack and Annie have survived all kinds of dangers on their adventures in the magic tree house. Find out how you can survive lots of scary situations, including sharks, earthquakes, fires, shipwrecks, and many more! With full-color photographs and illustrations, facts about real-life survival stories, and tips from Jack and Annie, this is a must-have for all survivors of the bestselling Magic Tree...

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 #13: Vacation Under the Volcano, they had lots of questions. How did ancient Rome become an emipre? Where did ancient

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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 #16: Polar Bears Past Bedtime, they had lots of questions. Why is the Arctic so cold? What did the first people of the

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Annie and Jack present information about ancient Greece and the athletic events known as the Olympic games that were held there.