Mary Pope Osborne

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 #17: Tonight on the Titanic, they had lots of questions. How many people were aboard the Titanic? Why weren’t there...

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system!
When Jack and Annie got back from their adventure in Magic Tree House #28: High Tide in Hawaii, they had lots of questions. What causes tsunamis? Who studies earthquakes? How do volcanoes form? What should people do if an avalanche hits? Find out the answers to these questions and more as Jack and

...

It's a book of magic tricks perfect for chapter book readers! When Jack and Annie went back in time to meet Houdini, they learned that the most famous magician of all time didn't use real magic at all. It was a trick! Now they've tracked down all the best, most fun, most tricky magic tricks and put them together in one book. With simple instructions, easy-to-follow diagrams, and tips from Jack and Annie,  Magic Tricks from the Tree House is...

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

Jack and Annie track the facts behind six people who have changed history, including Florence Nightingale, Martin Luther King, Jr., Mahatma Gandhi, Harriet Tubman, Susan B. Anthony, and John Muir.

The magic tree house transports Jack and Annie to the deck of the Titanic to find the mysterious gift that will free a small dog from a magic spell.

Provides information on snakes and other types of reptiles.

Eight-year-old Jack, his seven-year-old sister, Annie, and Peanut the mouse ride in a tree house to the Amazon rain forests, where they encounter giant ants, flesh-eating piranhas, hungry crocodiles, and wild jaguars.

The magic tree house takes Jack and Annie back in time to feudal Japan where the siblings learn about the ways of the Ninja.

"Jack and Annie search for the fourth secret of greatness for Merlin the Magician in Mexico City at the 1970 World Cup Games. They hope to learn something new from soccer player great, Pele"--Provided by publisher.