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Math Help: Properties of Zero 150 150 Deborah

Math Help: Properties of Zero

Overview:  What Is Zero? The number zero has a number of unique properties in mathematics.  It is the center of the number line,   a placeholder in place value, and the additive identity in algebra. It is neither positive nor negative.  Multiplying any number by zero gives the answer zero, but dividing by zero is undefined.…

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Who’s Afraid of the Normal Curve? 150 150 Deborah

Who’s Afraid of the Normal Curve?

Overview:  What Is the Normal Curve? The normal curve is a frequency distribution with special statistical properties.  The best-known application of the normal curve is the distribution of intelligence as measured by tests such as the Stanford-Binet, but there are other examples  that are close to the normal curve in human and animal behavior.  Biologists,…

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Basica of Algebra: Order of Operations 150 150 Deborah

Basica of Algebra: Order of Operations

Overview:  A Set of Rules The order of operations refers to a set of rules that are commonly agreed upon in mathematics, so that the answer to a problem is always the same when the correct order is followed.  If numbers are combined in a different order, then different answers will result.  When numbers are…

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Chaos Theory: Better Modeling Through Nonlinear Patterns 150 150 Deborah

Chaos Theory: Better Modeling Through Nonlinear Patterns

Overview: Chaotic Patterns Aren’t Random, Just Nonlinear Chaos theory is a system of mathematical modeling used for a number of systems found in mathematics, physics, biology, the social sciences, art, and philosophy. The mathematics involved is a simple way to describe relatively complex events. A small change on one variable can set off large oscillations…

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SchoolTutoring Academy Reviews: Geometric Symmetry 150 150 Deborah

SchoolTutoring Academy Reviews: Geometric Symmetry

Overview:  What is Symmetry? Symmetry in mathematics, especially in geometry, has a formal meaning that can be demonstrated by relationships between parts of a design.  For example, a figure is symmetrical along an axis of reflection if both halves of the figure are exactly the same.  In fact, if the edge of a mirror is…

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Math Practice: Solving Word Problems 150 150 Deborah

Math Practice: Solving Word Problems

Overview:  Word Problems Are a Special Kind of Reading Most people say that word problems or story problems are the most difficult part of math,  whether they are still attending school or have graduated.  Word problems involve a thorough reading, attention to detail, and finding the equation or equations behind the story presented in the…

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Our SchoolTutoring Academy Teachers Review Biology: Illness and Cell Structure 150 150 Deborah

Our SchoolTutoring Academy Teachers Review Biology: Illness and Cell Structure

Overview:  A Mystery at the Cellular Level Genes within the nucleus of every cell contain all the information to control cellular growth, life, and reproduction.  The DNA regulating those processes is embedded within special proteins called chromatin. For hundreds of years, scientists have wondered why some of the chromatin is found in clumps at the edge…

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SchoolTutoring.com Reviews Rational, Irrational, Real, and Imaginary Numbers 150 150 Deborah

SchoolTutoring.com Reviews Rational, Irrational, Real, and Imaginary Numbers

Overview:  Types of Numbers There are many different ways to describe numbers as they are used in operations and in algebra.  When students look at the number line, most numbers on that line are rational.  They can be expressed as fractions or as decimals that divide exactly and are terminating. Other numbers (just as real),…

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The Search for Pluto: Finding Planets, Moons, and Dust in the Solar System 150 150 Deborah

The Search for Pluto: Finding Planets, Moons, and Dust in the Solar System

Overview:  Discovery of a New Planet The dwarf planet Pluto has always been a mystery.  In the 19th century, the planets Uranus and Neptune were discovered.  However, there were questions about the orbit of Neptune that led astronomers to suspect the existence of an unknown planet they called Planet X.  A very young astronomer named…

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Statistics: How to Use Frequency Distributions 150 150 Deborah

Statistics: How to Use Frequency Distributions

Overview:  What Is A Frequency Distribution? A frequency distribution can yield a lot of information about the results of an experiment or survey, even before any more complex statistical analysis is done.  In its simplest form, a frequency distribution is just an organized tally of how many times an event occurs.  It can be stated…

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