Expand your child's knowledge about science, history, and geography with this lot of 9 Magic Tree House Research Guides and Fact Trackers by Mary Pope Osborne. These books are perfect for young readers who love to learn while having fun. Each book in the series covers different topics and subjects, providing a comprehensive and engaging way for children to broaden their understanding of the world around them. Add these books to your child's collection today and watch their curiosity and imagination soar! The books come from a 2nd grade classroom and are in good condition. Reading level O.