Problems to Enjoy presents an enormous selection of mathematics problems for middle and high school students. Teachers will find it especially useful; divided into four categories and three grade levels, the problems are easily searchable. Eventually, the site's creators hope to "build up a comprehensive library of problems in a format that is simple to access, download and customize." The...

Purple Math has about 100 lessons covering virtually every topic in standard high school and college algebra classes. The site is divided into beginning, intermediate, and advanced levels, and a separate section is included for word problems. Purple Math excels in its use of examples; for each topic there are plenty of illustrative problems with clearly defined solutions. In addition to being an...

This online toolkit consists of a series of modules "designed to help a linear algebra student learn and practice a basic linear algebra procedure, such as Gauss-Jordan reduction, calculating the determinant, or checking for linear independence." Each module is completely interactive and allows the user to input custom values and parameters. The modules are divided into four separate categories,...

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”...

With a development team that includes several well-regarded mathematicians and other such folk, the S.O.S. Mathematics website is a high-quality resource for persons who might find themselves in need of a bit of refresher on topics ranging from algebra to differential equations. Started in 1995, the site currently includes more than 2500 web pages that contain concise explanations of topics that...

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...

For students in college-level math courses, revisiting algebra can be a challenge, and learning for it the first time can prove to be tricky as well. This website, created by Professor John Miller of the City College of the City University of New York (CUNY) contains a very helpful tutorial application that can help students master different aspects of algebra. This application features...

Helping students learn about basic and advanced math skills can be a challenging task, so it is nice to learn that a number of community colleges have created online resources for educators. This site was created by the Valencia Community College's Math Center, and it features a number of educational toolkits designed to help both educators and students. Visitors can start by looking through the...

The introduction to this site remarks, "If you need help in college algebra, you have come to the right place." Their statement is accurate, as the staff members at the West Texas A&M University's Virtual Math Lab have done a fine job creating a series of online algebra tutorials for students and anyone else who might be returning to the world of algebra. First-time visitors should look at their...

From polynomials to rational expressions, the world of algebra can be a befuddling place. Of course, trigonometry presents certain challenges as well, what with its sine graphs and inverse functions. Students and teachers of these subjects need fear no longer, as this site offers a guide for smooth sailing through all of these thorny matters. These mathematics resources were designed to...