All living things on Earth must eat something in order to survive. Most plants use photosynthesis...

Approximately 99 percent of all the electricity in Norway comes from hydropower. There are close ...

Did you know that people in small towns often walk where they need to go? They do not need to dri...

The simplest machines are the lever, wheel and axle, pulley, ramp, and screw. The electric motor ...

Florida produces the most citrus fruit of any state in the United States. Besides oranges, the st...

Many governments around the world are encouraging the use of conservation agriculture. Simple tec...

A persuasive paragraph is a group of sentences used to convince someone to believe or do somethin...

Table salt is a type of crystal that people use every day. The smallest crystal in the world is m...

Wedges are used to separate objects. Some types of wedges, such as chisels, have been in use for ...

Different tools can be used to measure length. These include rulers, tape measures, and yardstick...

Did you know that sound is only made when objects vibrate? Vibrating objects create sound waves. ...

The frightful tales in R.L. Stine's Goosebumps series have made him one of the world's best-selli...

Did you know that all of the blood in your body moves through the circulatory system? This import...

The Cold War was a conflict between the competing ideologies of communism and capitalism. It came...

Today, many farmers are more like engineers and technicians in high-tech professions than traditi...

After years of conflict and bloodshed, the settlers who first came to Texas in 1820 joined the Un...

Explore the current and future applications of common elements from the periodic table of element...

Each title in the Lightbox Literature Studies series features comprehensive teacher resources, su...

In December 1787, Delaware became the first state to ratify the Constitution. The document went i...

In the early 1770s, many American colonists were growing angry. They disliked the way the British...

Thanksgiving began long ago when Pilgrims from England settled in the New World. As Christians, t...

Did you know that Abraham Lincoln was the 16th president of the United States? He believed in fre...

Lake Superior is the largest of the Great Lakes. It is so large that it holds more water than the...

Politics have always played a role in African American history. African Americans performed polit...

Pyramids

Did you know your body uses energy to move, grow, breathe, and sleep? All living things on Earth ...

Videos are a great way to learn information for projects. A good informational video can bring to...

The Supreme Court, often referred to as the High Court, has powers over all the other courts in t...

Did you know that stratus clouds can cover the sky like a thick gray blanket? Stratus clouds are ...

Did you know that the oceans are home to most of the world's living things? Scientists believe th...

Each title in the Lightbox Literature Studies series features comprehensive teacher resources, su...

Did you know that the continent of Africa is home to animals that people in other parts of the wo...

Métis

While some scientists studied the heavens, others learned more about the building blocks of the u...

Every year, thousands of people travel to New Orleans for Mardi Gras. The city hosts the largest ...

As of the end of 2014, nearly 60 million people across the world have been forced to flee their h...

There are three main kinds of 3D modeling. People can use 3D modeling to digitally preserve destr...

Did you know that the Golden Gate Bridge, in California, connects San Francisco with Marin County...

Did you know that most cars available today are already partially autonomous? Companies are takin...

Natural resources are raw materials from nature that are used by people. Any resource that is bei...

A descriptive paragraph is a group of sentences that describes a noun. It may be complete by itse...

Did you know that wind can carry plant seeds to new places? People can use wind to move water and...

The ancient Greeks were the first to describe oligarchy as a form of government. They defined oli...

Long ago, there were few toys and no video games. Children had less time to play because they had...

Deciduous forests have trees that lose their leaves in autumn and winter. In both Europe and Nort...

Wetlands cover between 2 and 3.3 million square miles (5.3 and 8.6 million square kilometers) of ...

The firefighter is a person in my neighborhood. Did you know that firefighters wear about 60 poun...

An animal that is capable of active flight can flap its wings to create lift. Bats are the only t...