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DK Science & Technology: Mathematics

WHAT ARE MATHEMATICAL MODELS? WHAT IS SCIENTIFIC NOTATION? FIND OUT MOREMathematics explores the properties (characteristics) of numbers, shapes, and space. Using math, scientists can describe…

DK Science & Technology: Elements

HOW MANY ELEMENTS ARE THERE? WHICH ARE THE MOST COMMON ELEMENTS? METALSPERIODIC TABLEFIND OUT MOREA substance made up of one kind of atom is an element. Gold is an element because it only contains…

Algebra: Compound Inequalities

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

Algebra: Simplifying Rational Expressions

Simplifying Rational Expressions Algebra Rational Expressions Simplifying Rational Expressions Combining Rational Expressions Multiplying and Dividing Rationally Encountering Complex Fractions…

Friday the 13th

Unlucky No. 13 combines Christian and pagan beliefs by David Johnson Related Links Our Favorite PhobiasSports and the Number 13The Hoax Files Phobias Quizzes Quiz: Phobias, Part I…

Algebra: Factoring with the Bomb Method

Factoring with the Bomb Method Algebra Factoring Polynomials Greatest Common Factors Factoring by Grouping Special Factoring Patterns Factoring Trinomials Using Their Coefficients Factoring…

Sports Section

Which Sport Is It? Origin of Athlete Nicknames Sports Superstitions The Martial Arts The Wide World of Sports Homegrown Sports Back Numbers #1 Sport Worldwide Official…