Have to confess that I didn’t watch the whole (20 minutes) course. Liked the design (has also good contrast for old eyers) and the excellent synchronisation of narration with the objects appearing (using Effects). Hope to find time to watch everything later on.

Some small tips:

• It is a non-responsive project, publish it as Scalable HTML, would be nice to watch it better on a bigger screen.
• Edit the color of the playbar to match the background. Or use custom buttons.
• The Replay button is not functional, I don’t know which action you used?Audio sometimes replays but the graphic content never appears on replaying.
• Did you prevent any navigation by the TOC?  It is fine to impose a sequence, but would be nice to be able to allow navigation to already visited slides.