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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 #38: Monday with a Mad Genius,?they had lots of questions. Why was Leonardo da Vinci interested in flight? What are some of his most famous painting? Did he really keep noteboooks just like Jack? What do scientists today think of his ideas? 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. ? ??