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Tutorials and applets for all calculus lessons-related rates=good

Collection of Math Tech activities, Related Rates examples.

Inexpensive typing tutor that adjusts to your needs. Highly rated by CNET.

SuperKids is a great educational software review site. The site provides rating scales for educational value, kid appeal, age ranges, and ease of use. They also delve into system requirements, price comparisons, and product support. This particular review is on a program called Words Rock! This is a strong drill and test vocabulary/spelling/grammar program, hidden in a search game. The educational component would be attractive to parents and teachers, as well as to students looking to challenge themselves.

Knols are articles that try (at the very least) to be definitive articles on a particular subject, eschewing the wikipedia model of everybody chipping in. Instead, readers rate each knol, so the good ones rise to the top.

A free site where members can find and contribute lesson plans and other educational support materials. Members can also review and rate the contributions and join groups to promote collaboration locally or globally. Nonmembers can view the resources.