"The Eisenhower National Clearinghouse for Mathematics and Science Education
(ENC) searches the Net for new and fascinating resources for math and
science teachers and classrooms, and each month recognizes a selection of
these as the Digital Dozen. Web sites that are considered for inclusion in
ENC Online's Digital Dozen are matched against the following criteria:

1. Supports educational reform efforts and national standards
2. Well organized and easy to navigate
3. Purposeful and attractive use of graphics and other multimedia
4. Reflects cultural diversity
5. Current and accurate information that is regularly updated
6. Depth of coverage of specific topics
7. Promotes cross-curricular learning
8. Provides innovative or cutting-edge resources for educators"