Discover the fact behind the fiction with Magic Tree House Research Guides!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 inMagic 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 did boys train to become knights?Did horses really wear armor?Find out the answers to these questions and more as Jack and Annie track the facts.Filled with up-to-date information, photos, illustrations, and fun tidbits from Jack and Annie, the Magic Tree House Fact Trackers are the perfect way for kids to find out more about the topics they discovered in their favorite Magic Tree House adventures. And teachers can use Fact Trackers alongside their Magic Tree House fiction companions to meet common core text pairing needs.Did you know that there's a Magic Tree House book for every kid?Magic Tree House- Adventures with Jack and Annie, perfect for readers who are just beginning chapter booksMerlin Missions- More challenging adventures for the experienced readerSuper Edition- A longer and more dangerous adventureFact Trackers- Nonfiction companions to your favorite Magic Tree House adventuresHave more fun with Jack and Annie at MagicTreeHouse.com!

WILL OSBORNE and MARY POPE OSBORNE have been married for a number of years and live in northwestern Connecticut with their three dogs, Joey, Mr. Bezo, and Little Bear.Mary is the author of over one hundred books for children, including novels, picture books, biographies, and retellings of fairy tales and world mythologies. Will has worked for many years in the theater as an actor, director, and playwright. Together he and Mary have coauthored two books of Greek mythology and eight Magic Tree House Fact Trackers. Will has also written a multimedia planetarium show, Magic Tree House Space Mission, and is cocreator with Randy Courts of Magic Tree House- The Musical, a full-scale Broadway-style family musical based on Christmas in Camelot.SAL MURDOCCA has illustrated more than 200 children's trade and text books. He is also a librettist for children's opera, a video artist, an avid runner, hiker, and bicyclist, and a teacher of children's illustration at the Parsons School of Design. Sal lives and works in New York with his wife, Nancy.