Math sites

• Biographies of Women Mathematicians - Women mathematicians are the focus of this site. Besides the obvious connection to mathematics, this site also offers insights into the struggle of women for equality in the academic world of higher education in a subject area long considered the sole domain of men.
• Calculus help - Contains information on how to participate in Michael Kelley's SuperBowl of High School Calculus as well as tutorials, the 'calculus problem of the week', fun stuff and an interactive "cheat sheet" with all the formulas required for calculus.
• The Calculus Page - This site, hosted by University of California, Davis, Mathematics Dept. and supported by Williams College, Wake Forest Universitiy, and the Morgan Foundation, provides helps for students and instructors of calculus. Students will find Problems With Step-By-Step Solutions, Calculus Applets, Sample Exams, Links to tutorials, sample exams, animated demonstrations, and much more.
• Coolmath - This site is dedicated to making math fun. It has games, reference materials, lessons, and links for students, teachers and parents.
• Geometry Basics - These pages teach geometry facts covered in K-8 math courses. Each page has an explanation, interactive practice and challenge games about geometry.
• Hotmath - This free web site offers tutorial explanations for the actual homework problems assigned from leading U.S. math textbooks, covering algebra through calculus. Students can access the site, select their textbook, page problem number, and instantly begin a self-paced tutorial.
• The MacTutor History of Mathematics archive - This award-winning site from the University of St. Andrews in Scotland features biographies of mathematicians, extensive history of math, a famous curves index, and a wealth of information all about math.
• Mathematics Nrichment  - Challenging activities for all levels of math. Each month you'll find problems and articles on different themes. There's also an archive of materials going back to 1996.
• NCTM Illuminations - A website for students, teachers and families, this website provides interactive multimedia math investigations for students, as well as links to mathematics education web resources.
• Ohio Math Works - Ohio Math Works is an interactive, award-winning, multimedia project that shows students in grades 7, 8 and 9 how industry professionals use mathematics in their careers! Videos take students behind the scenes in companies and give students an opportunity to do the math-based tasks that are done by professionals on the job. Ohio Math Works has been recognized by the Eisenhower National Clearinghouse as one of several math sites that will engage your most resistant math student!
• PRIME Encyclopedia  - A premier destination for superior mathematical content on the Web, PRIME (Platonic Realms Interactive Mathematics Encyclopedia) was started by a group of math education graduate students in order to provide high-school and college students with reliable mathematical information that was both accurate and inspiring. Search by topic, keyword, and by level. There are also free downloads and featured articles on topics such as the Fibonacci sequence, Zeno's paradox, and Kepler's laws.