Grade 4

Wrestling, one of the oldest forms of hand-to-hand combat, is a popular sport today. Wrestlers use their raw strength to throw their opponents off-balance and pin them to the ground! Children More →

Great medical triumphs have taken place at hospitals. But are these medical buildings also a great place to go looking for ghosts? According to some, they are. Ghost hunters believe that the… More →

People train in the martial art of karate to strengthen their bodies and minds. Many can kick and punch with enough force to break wooden boards in half! Young readers will discover how… More →

In 2007, U.S. Army Sergeant Edward Watson and his regiment, who were serving in the Iraq war, found a nearly starved puppy covered with fleas. The men took the dog, which they named Charlie,… More →

InPrison Puppies, young readers will meet the hardworking dogs in the Puppies Behind Bars program. This organization teaches prison inmates to raise puppies that will later work as service… More →

Motorcycle drag racing is becoming a very popular motor sport. Amateur racers use their street bikes to drag race, while professionals use drag bikes that can reach 200 miles per hour.… More →

Fasten your seat belts for some really fast rides! This series introduces thrill-seeking readers to the most amazing vehicles around, from the jet-powered Thrust SSC, which can reach speeds… More →

Famous for the snowy peaks of the Swiss Alps, Switzerland is a popular destination for skiing and snowboarding enthusiasts all over the world. Swiss alpine culture is also known for a long… More →

Costa Rica, which means “Rich Coast,” is aptly named. Its long coastlines, bordering the Caribbean Sea to the east and the Pacific Ocean to the west, have some of the most diverse ecosystems… More →

In the spring of 2010, wildlife biologist Tony Fischbach visited the Chukchi Sea off the northwest coast of Alaska. He was there to study walruses in their remote Arctic habitat, but it… More →

Iran is an ancient country that used to be called Persia. The Persians were one of the oldest civilizations on Earth, and Persian culture has a strong presence in Iranian culture today. In… More →

Do some animals really have the power to transform their appearance? The surprising answer is yes. In this book, young readers will learn about gray tree frogs, seahorses, mimic octopuses,… More →