Magic Tree House Fact Tracker #34: Dogsledding and Extreme Sports: A nonfiction companion to Magic Tree House #54: Balto of the Blue Dawn

Track the facts about the famous sled dog race and other incredible feats—with Jack and Annie!   When Jack and Annie came back from their adventure in Magic Tree House 54, they had lots of questions. How do sled dogs race for so long? When was the first Iditarod? What are some other extreme sports? Find out the answers to these questions and more as Jack and Annie track the facts about the Iditarod, open water swimming, the Ironman triathlon, free climbing, the X Games, and other ways people test their limits.   Filled with up-to-date information, photographs, 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 discover in their favorite Magic Tree House adventures.