This site contains downloadable materials that are used as math and language arts curriculum in New York public schools. There is a lot of information on standards and classroom pedagogy that can be a bit intimidating to wade through. But it may be worth the effort if you want to stay aligned with standards. Plus, it's a free and complete program.
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
Online, super-hero themed science games for elementary and middle school levels.
This program includes videos, worksheets and quizzes for history learning in jr.