I have added video to the wiki, using EmbedVideo
extension of mediawiki.
I have posted a video instructing an example of the Completing the Square
I intend to record more video lessons and embed them into the math text, so it is like a book and a teacher all in one.
Of course you can not ask the video questions, but it should be a good extension of the students classroom notes.
I can not figure out how to align the video to the right and have the text wrap around it ... as always a work in progress.