Kids Homework Help
How does a flashlight work?
By using a battery hooked up to an electrical circuit system.
How does an electrical circuit system work?
A battery has negative electric charges and positive electric charges. If you look at a battery, you will see that there is a + sign at one end and a - sign at the other. The opposite charges are drawn to each other, but without an easy path, they will remain separated. That's where a circuit comes in handy.
A Power-full Bridge
Cells make up you, your friend, your hamster, and your mom's broccoli surprise. If it's alive or ever was alive, it is made of cells. Space scientists looking for life on Mars are trying to find simple cells-- not little green men, and biologists who search for cures to diseases work with cells. Small as they are, cells determine how life unfolds from its beginning to its end.
Circles, squares, pentagons, octagons, polygons, angles, rays, points, and lines, there are so many names to learn in geometry. They may sound strange and new, but geometry is all around you. Your computer monitor's surface is more or less a rectangle, your pencil is roughly a cylinder, and, viewed from the top, the cable from your mouse to the computer, is a line segment. Once you start thinking about geometric shapes, you'll find them everywhere.
What kinds of people settled the new lands of America? They had their own ideas about laws, religion, and what makes a good government. They were, in a word, independent.
In 1776, England was faraway, and people on this side of the Atlantic were heartily sick and tired of paying taxes on top of taxes to finance England's empty treasury. They were tired, too, of losing money by having the Crown interfere with their trade overseas. The men in the assemblies shouted that King George was a tyrant, so the King's men stopped the assemblies. When they still protested, the King brought in the army, making the colonists put them up in their houses. Any crimes the soldiers committed against the colonists were handled in the King's court by the King's judges.
In the beginning
Rome grew from a small band of villages in central Italy to the greatest empire of its time. Roman law and sciences spread throughout the Western World, changing forever the ways of the Europeans and North Africans. Romans built coloniae (colonies) on their western frontier by very strict standards, making certain that the people who lived there knew they were a part of the Empire. The ruins of Roman forts and bath houses can be found in England, at the edges of Roman rule, and the parts of the great Roman roads can still be seen today.
Twenty years before Jamestown was founded, over 100 women, men, and children came to Virginia to try their luck at starting a colony. They arrived on the stormy shores of what we know now as North Carolina. They were not the first to land there. Two years before, another group of colonists, all men, gave up trying to settle Roanoke Island and sailed back to England. The supply ships arrived too late to save the abandoned first colony, but they left behind fifteen soldiers to mind the fort who soon vanished into the wilds, driven off by an Indian attack.
When creativity is harnessed for useful ends, that is when we get amazing inventions. Can you think of a better computer? Somebody did. Otherwise there would only be a few of them; they would be really slow--and they would take up entire rooms! Or, how about a cell phone? Those were inspired by the communicators on the original Star Trek series.
Virginia educators (and librarians!) are very interested in helping kids realize their potential in the STEM (science, technology, engineering and math) fields. Indeed, Virginia has a history of producing some very inventive people.
If you were visiting the ancient Olympics, you wouldn't see:
Women: The women were forbidden to participate in or even observe the games. Any woman discovered there could be thrown off a cliff! The women (young, unmarried ones) competed in a separate series of foot races called the Heraea, named in honor of Hera, the queen of the gods.
Water Sports: Despite miles and miles of beautiful coastline, water sports such as swimming were never a part of the ancient Olympic Games.
Team Games: In ancient Greece, each athlete competed on his own.
No World Records: No measurements were recorded of the length of a jump or javelin throw. Likewise, no times were kept for the running events. Winners' names might be recorded, however.
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.
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.