History and Social Studies curriculum available for free from a non-profit, bipartisan organization. There are currently courses in American History, Government, and Economics, with World History in the works. Courses include e-books with embedded audio and video, plus course files (for planning and assessment) that can be used with a learning management system, Google Classroom, or downloaded for offline use. Looks like a great option for high school level students.
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.