"To help Jack and Annie find four secrets of greatness, the magic tree house whisks them back in time to meet Alexander the Great. He should know all about greatness, right? But young Alexander is bossy, vain, and not great at all! It's going to take a wild black stallion, magic from Merlin, and a lot of bravery for Jack and Annie to succeed." --back cover.

When Jack and Annie got back from their adventure in Magic Tree House #49:Stallion at Starlight, they had lots of questions. Why did people tame horses? What jobs do horses have today? Why was Alexander the Great's horse so famous? What are some other famous horses in history? 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...