An instructor at Boise State University offers his book on elementary algebra for middle school, high school, and college students. The book spans nine chapters and covers both pre-algebra and algebra topics. Clear explanations of polynomials, systems of equations, and exponential expressions are just a few concepts addressed in the book. A particularly useful chapter provides some suggestions for...

High school and college students are the target audience of this outstanding math site. The main topics addressed in the nine essays are trigonometry, algebra, and basic calculus. The author does a good job of introducing new concepts and working through examples; however, statements are occasionally made without much justification. Students at the intended level probably do not need detailed...

The Matrix Market website, provided by the National Institute of Standards and Technology, is "a visual repository of test data for use in comparative studies of algorithms for numerical linear algebra." The repository includes about 500 sparse matrices from a variety of applications, along with matrix generation tools and services. Visitors can scan the top ten or browse the repository by...

Designed and maintained by Elizabeth Stapel, an educator and holder of an advanced degree in mathematics, Purplemath contains hundreds of lessons designed to help students who might be having trouble with algebra. As Stapel notes on the site’s homepage, “These lessons emphasize the practicalities rather than the technicalities, demonstrating dependable techniques, warning of likely “trick”...

Under the motto, "Show me how, now!" Algebasics is a fine online mathematics instructional resource that takes young and old alike through the basics of algebra. The breadth of the material is divided into sixteen sections, which begin with, well, "the basics", and proceed all the way to a section on applying algebra to real-world situations. Each section asks users to solve a number of problems...