Magic Tree House Research Guides are now Magic Tree House Fact Trackers! Track the facts with Jack and Annie! When Jack and Annie got back from their adventure in Magic Tree House #9: Dolphins at Daybreak, they had lots of questions. Did dolphins ever live on land? How do dolphins communicate? How do sharks hunt for food? Which sharks are the most dangerous? 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.

MARY POPE OSBORNE and NATALIE POPE BOYCE are sisters who grew up on army posts all over the world. They are working on more Magic Tree HouseR Fact Tracker books to give Magic Tree House readers facts and information about places, time periods, and animals that Jack and Annie discover in the Magic Tree House adventures.Mary lives in Connecticut. Natalie makes her home nearby in the Berkshire Hills of Massachusetts. Mary is the author of all the Magic Tree House fiction titles as well as many more books for kids.SAL MURDOCCA has illustrated more than 200 children's trade and text books. He is also a librettist for children'sopera, 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.