Grade 4

Thinking about getting a pet? How would you like to be the first person on your block to have a potbellied pig? Or perhaps you’d rather cuddle up with a furry ferret. Miniature horses are… More →

Visit a magical city under the sea! Coral reefs look like colorful buildings rising up from the ocean floor. These huge underwater colonies are built by tiny animals called coral polyps. An… More →

We use wheels and axles several times every day. Young readers will learn how a wheel and axle work together, how they make work easier, and how they are used in larger, complex machines. More →

If you see a snake-like creature in the ocean swimming your way, watch out! It could be a moray eel. These creepy-looking fish can do some real damage to a human. Their large, sharp teeth can More →

Visit the racetrack in this book to see fast cars compete against each other. Race cars have powerful engines and fearless drivers. Zoom through this book and discover different types of race More →

People swim for many different reasons—recreation, exercise, or competition. The goal of competitive swimming is to be the fastest in a variety of events featuring different strokes. Kids… More →

Before Alex was paired with Lady, a German shepherd, he never knew when a seizure would strike. Someone had to stay with Alex at all times—he couldn’t even watch television by himself. Now,… More →

Can we meet today’s energy challenges with clean, cheap, reable sources of energy? Yes! And one of the solutions is right under our feet. Using Earth’s Underground Heat uses clear, simple… More →

The United States Army Rangers are an elite light infantry special operations force. Readers will learn what life is like as a Ranger, what tools they are trained to use, and what kind of… More →

People of all ages love to play and watch the game of baseball. It has been a part of American history for around 150 years. Young readers learn the history of baseball, learn how the game is More →

Protecting the environment can be as simple as thinking more about the food you buy and where it comes from. In Eating Green, kids will discover what qualities make food eco-friendly and how… More →

Miniature horses may be small—they’re not much bigger than large dogs—but they are very strong. In fact, minis were once put to work pulling wagons in coal mines. Nowadays, miniature horses… More →