
Algebra  Mathematical Abstraction from Concrete Experience
Illustrates how the student learns algebra while interacting with manipulatives, physical objects, represented by the numerals and variables of mathematics.

Algebra Homework Help and Solvers
Free tutorials to help create solutions with work shown, write algebra lessons and help solve homework problems.

Algebra Review in Ten Lessons
Features discussion of topics, user interactivity through multiple choice quizzes, inline examples and exercises with complete solutions, and popup graphics. Available in pdf.

FlexMath
The CK12 Foundation presents their successful interactive resource for teaching algebra to students.

Fundamental Theorem of Arithmetic
Explores the relationship between composite numbers and prime numbers.

IB Math Studies
With information taken from chapter Functions 1 of the IB Mathematical Studies textbook.

Irrationality of the Square Root of 2
Article from the Platonic Realms Interactive Mathematics Encyclopedia.

Jessica's Math Sites
Collection of sites for learning algebra.

Lesson Tutor: Algebra Grade 9
Targeted to students of all grades and abilities. Includes basic lessons such as solving for x, order of operations, and expressions from equations.

Math Dork
Provides Algebra I lessons through animations.

Ms. Lindquist: The Tutor
Free, webdelivered system for tutoring students in writing expressions and for algebra word problems.

Paul's Online Math Notes
Notes from a course taught at Lamar University. Intended as a refresher in algebra.

Quadratic Equation Solver
Solves for the value of x using a quadratic formula. With link to source code.

Solving Story Problems
From the Platonic Realms Interactive Mathematics Encyclopedia.

Stroh Math Page: Free Algebra Help
Provides interactive material covering Algebra I and II. With explanations, examples, and practice problems with hints and answers.

Theorem of Pythagoras
Offers a demonstration of the theorem.