Internet resources for Pre-Calculus

Also see the Math Forum's Internet Mathematics Library: Pre-Calculus.

Classroom materials for teachers and students
Selected pre-calculus Internet resources for the classroom including lesson plans, activities, and interactive resources.
Software for pre-calculus
Publicly available software and publishers online.
Internet projects
Activities for students and lovers of pre-calculus.
Public forums
Mailing lists and newsgroups sponsored by the Forum and others where mathematicians,teachers, and students trade ideas about pre-calculus.