Grade 4

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 →

For thousands of years, people have been fishing in lakes, rivers, and the ocean. Ancient peoples used nets, spears, and their bare hands to catch fish for food. Today, many people fish just… More →

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 →

Named after two soldiers who won the Medal of Honor, the Stryker is an armored combat vehicle that serves many roles in the United States Army. Strykers can carry troops, guns, and missiles.… More →

It is estimated that there are currently 400 million dogs in the world. Many people keep these energetic, loving animals as pets and enjoy taking them on walks or playing fetch with them in… More →

For over a quarter century, Germany stood as a country divided. A huge concrete barrier known as the Berlin Wall physically divided the capital of Berlin. When the wall came down in 1989,… More →

Both water turtles and land turtles can be kept as pets. These unique creatures are not the most common pets, and it is best to try to re-create their natural environments as much as… More →

Sidewinders leave J-shaped tracks when they slither through the deserts of the Southwestern United States and Northwestern Mexico. Students will learn why sidewinders leave such tracks, what… More →

France’s most famous icon is the Eiffel Tower. This tower in Paris is the height of an 81-story building and ranks as the most visited monument in the world! This book introduces children to… More →

Get close to the battlefield in one of the most heavily armed gunships in the world. The AC-130 has enough firepower to take out enemy tanks and other armored vehicles. Learn about the… More →

Have you ever felt your house was haunted? Many people have reported that ghosts or other paranormal creatures haunt their houses. Some claim to have seen objects move by themselves. Others… More →

Boasting some of the most beautiful landscapes in the world, Thailand is located in Southeast Asia. It has many beaches that attract tourists from all parts of the globe. Kids will learn… More →