Illustrates how the student learns algebra while interacting with manipulatives, physical objects, represented by the numerals and variables of mathematics.

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

Features discussion of topics, user interactivity through multiple choice quizzes, in-line examples and exercises with complete solutions, and pop-up graphics. Available in pdf.

The CK-12 Foundation presents their successful interactive resource for teaching algebra to students.

Explores the relationship between composite numbers and prime numbers.

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

Article from the Platonic Realms Interactive Mathematics Encyclopedia.

Collection of sites for learning algebra.

Targeted to students of all grades and abilities. Includes basic lessons such as solving for x, order of operations, and expressions from equations.

Provides Algebra I lessons through animations.

Free, web-delivered system for tutoring students in writing expressions and for algebra word problems.

Notes from a course taught at Lamar University. Intended as a refresher in algebra.

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

From the Platonic Realms Interactive Mathematics Encyclopedia.