This book tells the story of Ankylosaurus. This armored beast looked like a walking tank. It lived during the Cretaceous period between 100 and 65 million years ago and fed on plant material. More →
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Family photos are important historical sources. These snapshots in time help us learn about what life was like in the past. Fully decodable text features high-frequency words, and words with… More →
Which continent is the world's windiest? Antarctica! Find out about Antarctica's landforms, people, animals, and much more in this book. More →
Antoine de la Mothe Cadillac had a plan to expand the lands of New France by founding a colony where trade could easily flourish. In 1701, his hunger for power and adventure led him to the… More →
Anxiety disorders, such as phobias, panic disorder, and obsessive-compulsive disorder are the most common group of mental illnesses in the United States. Recent studies suggest eight percent… More →
Once an early settler community had established itself, its first priority was building a school. Students of all ages shared one teacher and the same four walls year after year. A One-Room… More →
This newly revised edition describes how building a school was a priority once an early community became established. Students of all ages shared one teacher and the same four walls year… More →
These army pilots fly the most demanding helicopter in existence, a machine so complex to operate that it's known as 'Riding the Dragon'. Only 3% of existing army helicopter pilots qualify to More →
This book tells the story of the enormous Apatosaurus, who lived during the late Jurassic period between 170 and 140 million years ago. It weighed up to 33 tons (30 metric tons), was more… More →