Jack and Annie look at knights, armor, and life in a castle.

What were pirates really like? How did people become pirates? Where did pirates bury their treasure? Dig up the answers to these questions and more in Jack and Annieś very own guide to pirates. Includes information onpirate flags, pirate treasure, real-life pirates, walking the plank, and much more.

Jack and Annie present information about the universe, including our solar system, and briefly describe the history of space travel and of the science of astronomy.

Describes the changing nature of weather and how meteorologists predict and study such storms as tornadoes, hurricanes, and blizzards.

Annie and Jack present information about ancient Greece and the athletic events known as the Olympic games that were held there.

Describes the people and animals of the Ice Age.

What was it like to be a gladiator? How many people died in the destruction of Pompeii? How did Roman children spend their days? Find out the answers to these questions and more in Magic Tree House Research Guide: Ancient Rome and Pompeii. This is the nonfiction companion to Vacation Under the Volcano (Magic Tree House #13).

Join Jack and Annie find the facts behind the fiction on polar bears and the Arctic.

Discusses the penguin life cycle and the ecology of Antarctica, where they live.

Jack and Annie share what they learned through their research of ghosts, telling some of the stories they discovered, and offering tips on how to look for more information. When Jack and Annie got back from their adventure in Magic Tree House #42: A Good Night for Ghosts, they had lots of questions. What are some of the most famous ghost stories? Why do people believe in ghosts? Do most cultures have ghost stories? What are ghost hunters? Find out...

Explores what life was like for children, both rich and poor, in Victorian Great Britain.

Presents a non-fiction companion to the book "Abe Lincoln At Last!," discussing what it was like to grow up in a log cabin and what Lincoln's family life was like, and describes how he became the sixteenth president of the United States.

Presents a nonfiction companion book to "Stallion by Starlight," discussing the history of domesticating horses and explaining why Alexander the Great's horse was so famous.

"A nonfiction companion to Magic Tree House #52: Soccer on Sunday"--

Introduces the Vikings, discussing why they went on raids, what they wore, what their ships were like, and how they shaped history.

When Jack and Annie came back from their adventure in Magic Tree House Super Edition #2: "Night of the Nine Dragons," they had lots of questions. What do tales about dragons have in common? Are mermaids real? How do unicorns use their horns? Find out the answers to these questions and more as Jack and Annie track the facts about their favorite creatures from myths and legends. And just what might some of those creature sightings "really" be?

Jack and Annie share facts about baseball and its history, including when it was invented and how it's played.

Following their adventure with Benjamin Franklin, Jack and Annie want to learn more about the Founding Father and search out facts about his life and accomplishments, including his electricity kite-flying experiment and his most famous inventions.