Grade 4

In the 16th century, Nostradamus wrote predictions of the future. Some people claim that Nostradamus predicted the Great Fire of London, the American Revolution, and World War II. Others say… More →

The sport of cheerleading demands strength, flexibility, and spirit. Cheerleaders dance, tumble, and even fly through the air to encourage sports teams and excite crowds. This book will teach More →

When there is danger in shallow water, Littoral Combat Ships are called into action. These ships can go in water too shallow for other ships of the United States Navy. Armed with high-tech… 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 →

Haiti is a country that has experienced many hardships—most recently, a devastating earthquake in January of 2010. It is also a country with a rich history and a culture that is famous for… 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 →

Indy cars are open wheel race cars that are used in the Indy Racing League (IRL). The cars speed along tracks with straight stretches and sharp turns. Safety is a large concern, as Indy car… More →

Thousands of people around the world have claimed to have been abducted by aliens. Is there truth to these reports, or did the people make them up in order to get into the headlines? This… More →

The first shapes found in crop fields were circles. Since then, people have discovered more complex designs. Where do these designs come from? Are they messages from alien visitors, or are… More →

The United States Army uses variations of the UH-60 Black Hawk to perform a wide variety of missions. The Black Hawk has been the primary helicopter of the Army for over 30 years. This book… 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 →

This ancient country is considered the birthplace of Western civilization. Tourists can walk on the grounds of the first Olympic Games, see the mythical Mount Olympus, and visit the Acropolis More →