Grade 3

Many people believe that the United States Air Force’s F-22 Raptor is the most advanced jet fighter in the world. With stealth technology and powerful weapons, it can be used on a variety of… More →

The largest animal alive is a mammal. It's the 150-ton blue whale. This whale is not only large but also loud—louder than a jet engine! Turn the pages of this book to learn about the… More →

Dinosaurs, the world's most notorious reptiles, became extinct a long time ago. However, their cold-blooded, scaly reptile relatives still creep around today. While people no longer have to… More →

For over 200 years, the United States Army has been one of the most powerful armies in the world. Responsible for all land-based operations, the Army uses a variety of vehicles and troops to… More →

Delta Force is the most elite force in the United States Army. It specializes in covert operations, often undercover deep in enemy territory. Only the best in the Army can serve in Delta… More →

The bomb squad technician must quickly and carefully defuse the bomb before the timer reaches zero and the bomb explodes. If the technician fails, the building will blow up and people will be More →

Members of the insect class often get a bad rap. People swat at them, stomp on them, and go to great lengths to repel them. Though some insects are pests that spread disease, many are… More →

Compare a hummingbird and an ostrich; the differences are striking! One is tiny and hovers in the air like a helicopter. The other is massive and stays grounded, sprinting rather than flying. More →

When bullies like lions and hyenas are on the prowl for a lunch to steal, leopards keep their cool. The clever cats drag their kill with them as they climb high into trees, where they can… More →

When a wildfire breaks out in a remote area of the wilderness, smoke jumpers are called to action. As their plane nears the fire, they leap out and parachute into the forest to fight the… More →

Trespassing in mountain lion habitat is a dangerous idea. Mountain lions do not share their territory, and they will not hesitate to stalk, pounce, and bite to defend it. Read about people… More →

The United States Air Force uses HH-60 Pave Hawks to deploy Special Forces and to perform search-and-rescue missions. Engaging photos and design highlight how the speed and technology of… More →