The College Board - Information on the Advanced Placement exams, as well as the SAT and PSAT exams. Also, there is a college search feature that lets you search colleges across the United States based on the characteristics that you are interested in.

MathWorld is a comprehensive and interactive mathematics encyclopedia intended for students, educators, math enthusiasts, and researchers. Like the vibrant and constantly evolving discipline of mathematics, this site is continuously updated to include new material and incorporate new discoveries.

eMathHelp - A website offering free math help, including Math Notes on subject areas from Pre-Algebra to Calculus 2. It also features on-line calculators including graphing, derivative, and integral calculators. The site also contains solved questions and features professionals who will respond to additional questions. The site is ad supported.

Platonic Realms - A fantastic web site that includes a math encyclopedia, math quotes, math humor, the art of M.C Escher, the Greek alphabet, and many other topics too numerous to mention!

Newton's Window - A website for students, families, and teachers as they learn - and teach - math. An ad-free site offering ideas, resources, educational gifts and products, links, and more.

Maths Online - A collection of activities, tests and links, including a Gallery of Interactive Multi-media Units.

Mathmistakes.info - Math resources for Algebra through Calculus, including online flash cards.

Ask Dr. Math - Archives of answers to math questions..

Slates, Sliderules and Software - A Smithsonian Museum National Museum of American History exhibit on the history of mathematics teaching in America

History of Mathematics Archive - A resource on the History of Mathematics from the University of St. Andrews in Fife, Scotland.

Jeff Miller's Stamps and other content: Information on mathematicians on postage stamps, as well as Earliest Known Uses of Some of the Words of Mathematics and Earliest Uses of Various Mathematical Symbols.

RANDOM.ORG – True Random Number Service - An online Random Number Generator that can (among other things) produce a random sequence of numbers without repeats. I use it to choose questions for my calculus quizzes.

MathGV Software - Another FREE downloadable software to generate two and three-dimensional graphs. These can then be inserted into Word, Powerpoint or web pages.

American Mathematics Competitions - Information on the AMC 10 (for 9th and 10th graders) and the AMC 12 (for 11th and 12th graders). The test is given in February.

College Math Readiness Test - See an example of the math skills necessary for college.

Word of the Day - A Word of the Day from Merriam Webster. Great for building SAT vocabulary! (My old link, which has been updated, now leads here.)

MWSnap - MWSnap is a small yet powerful Windows program for snapping (capturing) images from selected parts of the screen. It is FREE!