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DK Science: Geological Time

THE FOSSIL RECORDRADIOMETRIC DATINGFIND OUT MOREGeologists (scientists who study rocks) divide the time since the Earth was formed until today into chunks called periods. During the various…

Stock Market Decimalization

Stock Market Goes Decimal Complicated fractions abandoned in favor of pennies by David Johnson   The New York Stock Exchange, NYSE, the world's largest, is…

Geometry: Using and Proving Angle Complements

Using and Proving Angle ComplementsGeometryProving Segment and Angle RelationshipsExploring MidpointsHow Many Midpoints Are There?Proving Angles Are CongruentUsing and Proving Angle ComplementsUsing…

DK History: Ancient Greece

WHAT DO WE KNOW ABOUT MYCENAEAN KINGS? WHO DID THE ANCIENT GREEKS WORSHIP? WHAT WERE ANCIENT GREEK PLAYS ABOUT? WHY DID THE GREEKS VALUE SPORTS? BIOGRAPHY: ALEXANDER THE GREAT 356–323 BC CITY-…

Homework Center: Mathematics

Subjects Geography History Language Arts Mathematics Science Social Studies Homework Skills Writing | Research Speaking & Listening Studying Reference Sources Almanac…

Homework Center: Factors and Fractions

Subjects » Geography» History» Language Arts» Mathematics» Science» Social StudiesHomework Skills Writing | Research Speaking & Listening Studying Reference Sources…

Everest Almanac

div.everestDiv{ border-top:solid 1px #dcdcdc; padding:20px 0; margin:10px 0;}         Our guide to the world's highest peak: those…

Math Quizzes

    Cool Stuff  |  Math  |  People  |  Science  |  Sports  |  United States …

DK Arts & Entertainment: Popular Music

WHEN DID POPULAR MUSIC BEGIN? WHAT STYLES OF POPULAR MUSIC ARE THERE? THE CHARTSFIND OUT MOREPopular or pop music is largely vocal and appeals to a large, mainly young audience. It was originally…