Monday, June 18, 2007

Functions

There are times when various quantities can be related to one another. If this relationship follows a regular pattern then we can assign variables to these quantities and write a mathematical equation to express this relationship. This relationship is called a function. More on functions...

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Tuesday, April 24, 2007

Scientific Notation Practice

Scientific Notation (exponential notation) refers to writing decimal numbers as a number multiplied by a power of 10. Now this is done in a certain way. What this boils down to is moving a decimal point, keeping track of how many places you moved it, and increasing or decreasing the power of 10 by that number of decimal...(cont. Scientific Notation Practice)

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Thursday, April 19, 2007

Equations of the Line

Linear equations have variables whose highest power is 1. Also the variables are not multiplied together. We say there is a linear relationship between the variables in these equations. This linear relationship implies that as one variable changes the other changes with a constant rate of change....(cont. Linear Equations)

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Exploring Inequalities

An inequality is a special equation that describes how two expressions are not equal. The signs <, ≤, ≠, >, and ≥ are used to express inequalities...(cont. Inequalities article)

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Friday, March 30, 2007

Quadratic Equations Tutorial

A quadratic function is an equation where the exponents of the variables are not greater than 2 but at least one variable with an exponent of 2, and if the variables are multiplied, not greater than 2. ...quadratic equations free lesson plan

I posted a new free math lesson plan to K12math.com on quadratic equations. Please feel free to download it and use it for your students or in your classroom.

Sincerely,
Russ Lewis
k12math.com

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Monday, March 26, 2007

Teaching Number Bases

As pointed out in the discussion Why Study Math various schemes were used to represent numbers throughout the ages. All of these systems did not support fundamental operations such as addition and subtraction. ...free math lesson plan on number bases

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Irrational Numbers Tutorial

Irrational numbers are numbers that cannot be expressed as the ratio of
two integers. See rationals.

One of the first irrational numbers discovered

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Rational Numbers Tutorial

A rational number is any number that can be represented by the ratio of two integers. ...free math lesson plan on rational numbers

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Real Numbers Tutorial

The Real numbers include the integers, the rational, and the irrational numbers and are represented as points on the number line. Every real number has its own position on this number line, and this one to one correspondence with no gaps makes these numbers a continuum. ...for a free math lesson plan on real numbers

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Tuesday, March 20, 2007

How to find a math tutor...

Cost of math tutoring can become a large factor. If you child needs long term math tutoring, not a bad thing, the cost of a professional math tutor can become high. Try finding one of your child's friends that is good in that particular area of math...more on math tutoring.

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Graphing and Coordinates

A function relates one variable to another. Usually this is done in terms of an equation involving one variable on the left hand side of the equals sign and an expression involving another variable and other constants...for more on graphing and coordinates.

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Linear Equations

Part 2 (Linear Equations) in a series of free articles for teachers, parents, and students on Linear Equations. Linear Equations generally fall into Algebra and Algebra 1 concepts.

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Trigonometry defined

Trigonometry is the study of triangle measurement and...trigonometry defined (cont.)

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Teaching Decimals

Decimals are numbers written using 10 as the base. Each position of the decimal number represents a power of 10 and the decimal point, the period '.', is used to indicate how the powers of ten advance as you move...Decimals (cont.)

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Friday, March 09, 2007

Teaching Money Concepts

Teaching your child about money reinforces the basic number facts of the base 10 number system: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. At first, for younger children, you can count the number ...
link to Teaching Money Concepts article

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