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  • Grades 3-12 in English only
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Recent Homework Help articles

01/14/2013 - 10:56am

Rocks come in all shapes and sizes, but what kind are they? You can’t ask them, but sometimes, if you know how to listen, they’ll tell you anyway.

The shape and size of a rock doesn’t tell you much about what it’s made of.
Big rocks break into smaller rocks all the time. But there are other things to look for that can give you their I.D.

01/14/2013 - 9:59am

How do the Sun and the Moon affect the Earth? Without the Sun, the Earth would be a big ball of frozen mud, just another asteroid, drifting in space with no gravity to anchor it here and nothing to give us heat and light. We could not be here without the Sun.

01/10/2013 - 1:14pm

Boom!
One fine morning, the old wooden dam went up in clouds of smoke and broken timber. It was a huge thing—ancient and strong, built to tame the Rappahannock River. Once the power of the water pushing against it had provided electricity for the town. But that was years ago. The dam was falling apart, but so slowly that it was becoming dangerous. So the Army Corps of Engineers blew it up one morning.

01/10/2013 - 11:35am

Slow, sleepy winter days find many animals curled up in their dens. They sleep warmly through winter, awakening in spring ready to enjoy the renewed Earth. This unusual, deep sleep is called hibernation.

What Is Hibernation?

True hibernation is a very deep sleep. The animal's body temperature drops, its breathing slows, and it is very difficult to awaken. But some animals, such as most bears, do not really hibernate.

01/10/2013 - 11:34am

Our rivers, lakes, and beaches are beautiful, but are they safe? Every day, the toxic runoff from parking lots, busy roads and quiet subdivisions makes its way into our streams and oceans. Even the oil burning off from cars on the roads gets washed into the groundwater and streams by way of the storm drain every time it rains.

The more houses we build, the more pollution we will add to our environment. Every time we lay down a new parking lot or piece of roadway, there is an impact on our environment.

01/03/2013 - 10:50am

Our 16th president was a very odd-looking man. Long-limbed and raw-boned, this frontier president grew up without a lot of the niceties we take for granted today. He grew up surrounded by wilderness and not having much schooling. As he remembered it, "...I could read, write, and cipher (simple math) ... but that was all."

12/03/2012 - 8:42am

At dawn on December 7, 1941, America was at peace, although it was clear a war was coming. Nazi Germany had overrun most of Europe and was literally at the gates of Moscow. Britain was slowly starving as Nazi submarines sank the ships carrying food and medicine the British needed. Although the United States sent huge amounts of war supplies to Britain and Russia and had greatly expanded its own Army and Navy, Americans were unwilling to go to war against enemies who had never attacked us.

11/07/2012 - 12:08pm
The First Emperor

China's first emperor was named Qin Shi Huangdi. He brought together all the warring states and made them his subjects in 221 B. C. Qin is pronounced "Chin" and ever after the country was named China. He took the name Shi Huangdi which means "first emperor." Qin was an unusual man. He standardized writing, bureaucracy, scholarship, law, currency (money), and weights and measures. He built a capital and many roads. He connected the old walls along China's northern frontier to form the Great Wall, to protect his country from invaders. But he was also cruel. He killed and banished many people who disagreed with him and destroyed books from the past.

11/01/2012 - 7:40pm

If it's December, it's time for that familiar topic for reports: Christmas Customs Around the World. Fortunately, the library has a number of resources to help you.

08/29/2012 - 2:23pm

The tribes who lived in the Western Hemisphere before the coming of the Europeans were as different from each other as the countries that came to claim their lands. The many stories of the people who farmed, hunted, and herded in the plains, forests, deserts, and hills of what we call North America tell how they saw the Universe and the wisdom that they found in Nature.