This is a game my teaching neighbour introduced me to a few years ago and it's great for quick daily reviews.
Before the kids can go out for lunch, recess or the end of the day, they have to correctly answer a review question. Right now we're learning about place value, so it might be ... "How much is 2 tens and 5?" Every child gets a different question (or at least not the same one as the child right before them). If they answer correctly then out they go, if not, then it's to the end of the line to try again.
Sometimes the ticket out the door is a recall question from science or social studies, a mental math problem, or spelling a weekly word.
Obviously I try to make it fun and I'll give the strugglers easy questions. I don't do this all the time, but when I do, the kids really enjoy it and rise up to the challenge.
Do you play this game or something similar? I'd love to hear what you do.