Mathematics

This calculator solves many algebra problems with steps shown. Finds slopes, line equations, completes the square, performs synthetic division, partial fraction decomposition, operations on fractions and polynomials, handles arithmetic/geometric sequences, and many more.

Khan Academy's course on College Algebra.

Self-paced lessons and tutorials covering a variety of algebra skills.

A free resource for students struggling with mathematics, MathTV provides free video tutorials on a number of Algebra skills.

Purplemath's algebra lessons are informal in their tone, and are written with the struggling student in mind. Don't worry about overly-professorial or confusing language.

MathWorld offers free tutorials and articles on algebra skills.

Mathematics is a peer-reviewed, open access journal which provides an advanced forum for studies related to mathematics.

Open Mathematics is a fully peer-reviewed open access journal that publishes original and relevant works on topics across the full span of mathematics.

DOAJ is a unique and extensive index of diverse open access journals from around the world, driven by a growing community, and is committed to ensuring quality content is freely available online for everyone.

This is a free OpenStax textbook that provides a comprehensive exploration of algebraic principles and meets scope and sequence requirements for a typical introductory algebra course.

This free OpenStax textbook explores fundamental concepts of algebra to meet the scope and sequence requirements of a one-semester elementary algebra course.

This free OpenStax textbook continues the philosophies and pedagogical features and Elementary Algebra and expands on the fundamental concepts of algebra to meet the scope and sequence requirements of a one-semester Intermediate Algebra course.

This free OpenStax textbook provides a comprehensive exploration of algebraic principles and meets scope and sequence requirements for a typical introductory algebra and trigonometry course.