Rachel, that's an awful lot to learn in one lesson! I would suggest sticking with quarter and eighth notes for one lesson, time signatures for the next, dotted rhythms for the next- and even that's loading them down with a lot of info in a little time. Younger students, at least, need a few lessons for the info to sink in and stay in, before moving on to the next concept. The activities sound great- but is this a one-day workshop or a semester-long class?