I'm really into spaced repetition (http://en.wikipedia.org/wiki/Spaced_repetition) for my own learning, and I was wondering how to implement it in my classes.  It occurred to me this morning that if you're expected to provide some game or activity to fill 10 minutes or so in every class, then if your co-teacher is on board you can add a little spaced repetition once in a while by throwing in a game targeted at a *previous* unit's material.  When the kids have to retrieve that stored information after they've already mentally moved on, it tells them on some level that short-term memory isn't enough, and it's more likely to be stored in a longer-term way, so they may perform better on their exams later.

An advantage of being able to use activities for previously-covered topics is that sometimes people make cool activities but only end up sharing them here after the lesson is over.  But if past material is fair game you can take advantage of some of those new gems.

Yeah, I'm sure there's a wide variety of scheduling situations.  I'm in a pretty small school, so I get to see some of my classes three times within a single textbook unit.  But even if you don't see them that often, you'd still have the option to make your activity one that focuses on a previous-unit topic. 

I chose Headmagnet.com for my own flashcards.  I checked out Anki, Mnemosyne, and Supermemo before settling on Headmagnet -- no system has been problem-free for me, but that's my favorite among them.

I knew that the name "Leitner" was associated with spaced repetition, but I didn't know anything more about it.  I just looked up an explanation that helped me understand what that picture with boxes was all about (http://flashcarddb.com/leitner) -- seems like a cool non-tech way to do what a good flashcard program does automatically.