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Purplemath

www.purplemath.com/

Purplemath contains practical algebra lessons demonstrating useful techniques and pointing out common errors. Lessons are written with the struggling student ...

Lessons and Tutoring - Reviews - Purplemath

www.purplemath.com/lessons.htm

Lessons and Tutoring - Reviews. The reviews below refer to free (or free-to-try)  ...

An Ordered Listing of the Lessons - Purplemath

www.purplemath.com/modules/ordering.htm

An Ordered Listing of the Lessons. The Purplemath lessons have been written ...

Purplemath Site Reviews

www.purplemath.com/internet.htm

A listing of reviewed algebra web sites, organized by category; includes ...

Ratios - Purplemath

www.purplemath.com/modules/ratio.htm

Proportions are built from ratios. A "ratio" is just a comparison between two ...

Solving Linear Equations: 'One-Step' Equations - Purplemath

www.purplemath.com/modules/solvelin.htm

"Linear" equations are equations with just a plain old variable like "x", rather ...

Systems of Linear Equations: Solving by Addition ... - Purplemath

www.purplemath.com/modules/systlin5.htm

Solving by Addition / Elimination (page 5 of ... Solving Systems of Equations by ...

Exponents: Basic Rules - Purplemath

www.purplemath.com/modules/exponent.htm

Exponents are shorthand for repeated multiplication of the same thing by itself.

Functions versus Relations - Purplemath

www.purplemath.com/modules/fcns.htm

Discusses the concept of functions versus relations, and demonstrates ways of ...

Mean, Median, Mode, and Range - Purplemath

www.purplemath.com/modules/meanmode.htm

Explains how to compute the mean, median, mode, and range of a list of ...

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Practical Algebra Lessons - Purplemath

www.purplemath.com

Practical algebra lessons that emphasize the practicalities of understanding ...

The Purplemath Forums - Algebra and pre-calculus (excluding ...

www.purplemath.com

Algebra and pre-calculus (excluding trigonometry). Topics in algebra and ...

Quizzes and Worksheets - Reviews - Purplemath

www.purplemath.com

Links to web sites offering quizzes and worksheets; reviewed by Purplemath.