This is book number 1 in the Magic Tree House series.
Magic Tree House was my favorite series as a kid. I loved following the wild and fun travels of Jack and Annie, as well as the mysterious Morgan le Fay. "The tree house spun faster and faster. Then everything was still. Absolutely still." Enjoy!— Lucy Barsness
Jack and Annie are ready for their first fantasy adventure in the bestselling middle-grade series the Magic Tree House
Where did the tree house come from?
Before Jack and Annie can find out, the mysterious tree house whisks them to the prehistoric past. Now they have to figure out how to get home. Can they do it before dark . . . or will they become a dinosaur's dinner?
Visit the Magic Tree House website