Jeopardy game- I would probably play this game to culminate the end of the unit. I would perhaps play the game a number of times throughout the year just as a refresher,too. It is amazing how many students will forget how many provinces Canada has after just a few months!
To begin the game, I would be tempted to start with 4 teams of 6. This way no one is put on the spot yet there would be just enough players so everyone has a chance to participate. Giving them the topics and time to practice ahead of time might be an idea, too. You could also put this on your blog for them to practice at home. The students are memorizing facts about Canada with this fun game.