Teachers in the London area of Ontario have a great resource at their fingertips and a quick visit to this website can provide some other great resources to teachers across Ontario.
Horizon Solutions in London, Ontario has been offering monthly seminars in theatre tech for years. I first heard of these from a teaching colleague and this has finally led me to check out their website.
At www.resourcestage.ca my most excited discovery was their list of resources including a glossary of audio terms. When you visit their site, scroll over to the right to where there is an icon of a folder and you will discover a selection of free resource materials. The Glossary of audio terms piqued my interest and it is definitely comprehensive. I'm sure you'll find other items there that interest you and perhaps can be useful in your Drama or Dance classroom.