Jack and Annie

Jack and Annie are fictional characters from the "Magic Tree House" book series, written by Mary Pope Osborne. They are siblings who embark on adventurous journeys through time and space using a magical treehouse filled with books. Each book in the series transports them to different historical periods or places, allowing them to learn about various cultures, events, and scientific concepts while solving problems and completing missions. The series blends entertainment with education, making it a popular choice for young readers interested in adventure, history, and exploration.