Academic Superstore sells software, computer products, learning games, books and lots of other interesting things related to eduation. You can get some high end products with great educator discounts. Some purchases require proof of eligibility, which you can get through membership in Homeschool Buyer's Co-op (and other hs organizations.)
This site has a collection of over 500 science lesson plans for grades 5 through 12.
History and Social Studies curriculum available for free from a non-profit, bipartisan organizati
Online, interactive program for learning music reading and theory.
This non-profit organization offers over 100 free self-paced, online, college level courses.
This online math program is designed to help students with math problems (including dyscalculia.)
This hands-on grammar curriculum includes CD ROMs, teacher manuals, and games for learning gramma