 Algebra.Help  John Traker
Algebra.help is an online resource designed to help people learn algebra. It offers lessons to teach or refresh old skills, calculators that show how to solve problems stepbystep, and interactive worksheets for testing skills. To be notified of updates and additions to the site, sign up for its announcements newsletter. Resources include study tips and suggestions for buying a calculator for school use; and tables of perfect squares and prime factors (The Sieve of Eratosthenes).
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 Algebra Problem of the Week  Math Forum
Algebra problems from a variety of sources, including textbooks, math contests, NCTM books, and puzzle books, and reallife situations, designed to reflect different levels of difficulty. The goal is to challenge students with nonroutine problems and encourage them to put their solutions into words. Different types of problems are used to reach a diverse group of algebra students. A
Teacher Support page is available for some problems.
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 Introduction to Algebra (The Math League)  Mark Motyka; Math League Multimedia
A Math League basic topic. Contents include: Variables; Expressions; Equations; Solution of an equation; Simplifying equations; Combining like terms; Simplifying with addition and subtraction; Simplifying by multiplication; Simplifying by division; Word problems as equations; and Sequences.
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 K12 Internet Algebra Resources  Math Forum
Classroom materials, algebra software online, Internet projects, and discussion groups where mathematicians, teachers, and students trade ideas about algebra.
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 Maths: Algebra (Constants and Equations Pages)  Jonathan Stott
About algebra, "a branch of maths where symbols are used to represent numbers," defining and describing the field and highlighting keywords used. All of the most common algebraic identities: Addition/Subtraction; Multiplication/Division; Polynomials; Powers; Logarithms; Surds; and Complex Numbers.
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 Understanding Algebra  James Brennan, Boise State University
In addition to "stuff to play with" on the web (a Graphing Applet (for exploring slope and intercepts of straight lines), a Prime Factorization Machine, a Prime Number List, a Quadratic Equation Solver, and a Quadratic Function Plotter), this book's full text is available. It presents "The Numbers of Arithmetic" (the basics  an introduction to the real numbers, addition and subtraction, order of operations, fractions, decimals, and percents); a general Introduction to Algebra; Word Problems; Graphing and Straight Lines; Systems of Linear Equations; Polynomials; Rational Expressions; Exponents and Roots; and Quadratic Equations. You can also buy the book through a link on this site. Available at http://www.edteach.com/algebra/, too.
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