Grade 7

Iceland is known as “the land of fire and ice.” This is because the island has around 200 volcanoes and about a tenth of its area is covered with glaciers. The colors of the national flag… More →

As a country of 17,000 islands, Indonesia is truly unique. It's fitting that many rare animals make their homes in Indonesia. The venomous Komodo dragon, one of the deadliest animals in the… More →

Many people believe that the United States Air Force’s F-22 Raptor is the most advanced jet fighter in the world. With stealth technology and powerful weapons, it can be used on a variety of… More →

The main gun on an M109A6 Paladin can fire up to four rounds every minute. Each round can travel up to 15 miles (24 kilometers). The Paladin has been the backbone of United States Army… More →

Said to be the fastest shark of all, the mako shark can cut through water at 40 miles per hour. Perhaps more impressive is the hang time achieved when the torpedo-shaped fish launches up to… More →

The earliest canoes were merely hollowed-out tree trunks. These gave way to birch bark canoes and, later on, wood-and-canvas canoes. Today there are racing canoes, inflatable canoes, and even More →

The United States Marines Corps works closely with the United States Navy to carry out amphibious assaults. Marines fight on land or at sea, depending on their mission. Their intense training More →

A powerful storm has capsized several boats off the coast. Helicopters show up to rescue people who have fallen into the sea. A few Coast Guard rescue swimmers leap from the helicopters into… More →

The Green Berets are a Special Forces unit of the United States Army. They carry out a variety of missions, including search-and-rescue, counterterrorism, and strategic assaults on enemy… More →

Rats steal food, destroy property, and spread disease. However, their worst offense is attempted murder. In some parts of the world, monster-size rats are ready to attack. Read some… More →

The sand tiger shark’s ragged mess of needle-sharp teeth inspires terror that is ultimately unnecessary. The crazed-looking shark isn’t interested in preying on humans, but it does have a… More →

An enemy ship is spotted 30 miles away from a United States Navy aircraft carrier. Sailors scramble to the deck to get F/A-18E/F Super Hornets airborne. Streaking into the sky, the Super… More →