BBC
Bbc: Bitesize: Gcse Music
GCSE Music provides links to a variety of music topics including composers, composing music, music theory, music technology, performing and evaluating music, music styles, world music, and traditional music from the UK.
Other
Tone Savvy
You will find many free games that will help you develop your music theory knowledge. Learn rhythmic dictation, key signatures and intervals as well as several other topics concerning music theory.
Canadian Theatre Encyclopedia
Canadian Theatre Encyclopedia: Factory Theatre
As well as being a forerunner in alternative theatre, Factory Theatre's mandate dictates that they only use new Canadian work. This makes Factory a great educational opportunity for Canadian studies.