I was introduced to this fantastic review game at my latest professional development. I played this with my math students right before our last math benchmark and they got so into it! I have known a lot of teachers that have played this game and they have ALL had success with it.
Here's how you play:
Cut about 20-30 die cuts of snowmen and write a variety of points on the back. (I made some 15, 50, 100, 200, double your score, triple your score, etc). On a handful of snowmen, write on the back "Sunny Day".
What's a snowman's worst enemy? A sunny day! If that card is pulled, it wipes out your team's score.
Separate the class in to two separate teams.
Show a review question and have all the students solve the problem on their white boards. Show their white boards (that way you can also see who understands it, while playing the game).
Select a student at random from one of the teams.
If they get the question correct (or in my case could go up to the smart board and solve for the correct answer), they get to choose a snow man for points. If they get the question wrong, it goes to the other team for a student to have a chance to solve.
Be sure to keep track of the score on the white board so the students can see. When the question is done and the snowman has been pulled, continue to the next question and swap teams for a chance to answer the questions.
I hope you will have a chance to play Sunny Day in your classroom! Let me know if you have any questions, I'm not sure how great I did at explaining the game.