When Jack and Annie got back from their adventure in Magic Tree House #40: Eve of the Emperor Penguin, they had lots of questions. What do penguins eat? Why do they huddle together in groups? Who won the race to the South Pole? What happens at a research station in Antarctica? 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.