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 →

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 →

A medium-lift assault helicopter, CH-46 Sea Knights are used to deliver heavily armed troops into battle. They are also used on several other missions. Readers will learn about these large… More →

Pakistan became a country in 1947 after the Muslim people of India fought for the creation of an independent state. Now, Pakistan is the second most populated Muslim-majority country in the… More →

Travel to Kenya and see if you can spot giraffes, elephants, lions and other African animals! Dinosaur bones and giant crocodile fossils discovered in Kenya reveal that the country has been… 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 →

Denmark has consistently been ranked as one of the happiest countries in the world. It has a high standard of living, an impressive literacy rate, and an industrious economy. In this title,… More →

Used by the United States Army Special Forces, AH-6 Little Birds have a reputation for their ability to quickly attack a target and then get away before the enemy can react. They have proven… 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 →

With huge rear wheels, flip-up bodies, and powerful engines, funny cars thrill fans across the country. Funny car engines can have over forty times the horsepower of a normal production… More →

People have raced stock cars for almost a century. The technology has changed, but the excitement of the races has remained the same. This title explains the history of stock cars, what’s… More →