The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! An adventure to blow you away! That's what Jack and Annie get when the Magic Tree House whisks them back to the 1870s. They land on the prairie near a one-room schoolhouse, where they meet a teenage schoolteacher, some cool kids, and one big, scary bully. But the biggest and scariest thing is yet to come! 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 books Merlin Missions: More challenging adventures for the experienced reader Super Edition: A longer and more dangerous adventure Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures