From the good ol' Librarians'
Index to the Internet comes a good site/toolbox for learning and teaching
stats.

“The Claremont Colleges' “Web
Interface for Statistics Education” (WISE) seeks to expand
teaching resources offered through Introductory Statistics courses, especially
in the social sciences. This project aims to develop an on-line teaching tool
to take advantage of the unique hypertextual and presentational benefits of the
World Wide Web (WWW). This teaching tool's primary application is as a
supplement to traditional teaching materials, addressing specific topics that
instructors have difficulty in presenting using traditional classroom
technologies. The tool serves to promote self-paced learning and to provide a
means for advanced students to review concepts.”