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Algebra: The Inequality Mood Swing

The Inequality Mood Swing Algebra Linear Inequalities Equations vs. Inequalities Solving Basic Inequalities The Inequality Mood Swing Graphing Solutions Compound Inequalities Inequalities…

Algebra: Completing the Square

Completing the Square Algebra Quadratic Equations and Inequalities Solving Quadratics by Factoring Completing the Square The Quadratic Formula All Signs Point to the Discriminant Solving One-…

1999 in Roman Numerals

The Question: Is the "official" Roman numeral for 1999 MCMXCIX or MIM? The Answer: According to librarians at the National Institute of Standards and Technology…

American Indians: Census Facts

From the U.S. Census Bureau Related Links Notable American Indians Preference for Racial or Ethnic Terminology Indian Languages Spoken at Home Facts About…

The New Paper Money

Source: The U.S. Treasury Department, Bureau of Engraving and Printing In 1996, the United States began issuing currency with a new design and additional security features. Pre-existing security…

DK People & Places: Mapping

TIME ZONES LATITUDE AND LONGITUDEFIND OUT MOREA map is a picture that represents a particular part of the Earth’s surface, usually from above and at a reduced size. It can show the whole world, a…

Geometry: Polyhedra

PolyhedraGeometryThe Next Dimension: Surfaces and SolidsPrismsPyramidsCylinders and ConesPolyhedraSpheresPlatonic Solids A polyhedron is a three-dimensional version of a polygon. Recall that a…

Laws to Know

Hammurabi, the king of Babylon in the eighteenth century B.C., was the first to record the laws and their consequences. The next time someone says it's the law, you could ask, “What kind?”Blue…

Joycelyn Jones Elders

former U.S. surgeon generalBorn: 8/13/1933Birthplace: Schaal, Arkansas Elders briefly served as the surgeon general of the United States under President Bill Clinton. She was confirmed in September…

Electoral Votes

The Question: Which state in the Union has the highest number of electoral college votes? The Answer: California. Each state has as…