Users can purchase books online. The American Mathematical Society is a research and scholarship organization. Its site provides membership information, a searchable database of AMS journal articles, a schedule of meetings and conferences, and links to other math sites. Edward Malczewski's Home Page Online lessons for secondary level math students and teachers. Some lessons deal with probability and physics.
Downloadable box plotting program is here too.
This site is dedicated to math and science education. It offers online lessons and activities, a database of curriculum resources for kindergardeners to 12th-graders, and other services. Euclid's Elements Complete text of this mathematical work that uses Java applets to illustrate the figures. The growth of sunflowers and the spirals of seashells demonstrates the mathematics of the Fibonacci sequence. This Web site, through pictures, text and diagrams explains Fibonacci numbers and the golden section to a general audience.