Here is a link that will take you to a site that has a Jeopardy game set up for you. You can decided on how many teams and the difficulty level. It can go up to 8th grade, but I'm sure some HS students could use the refresher on certain aspects of Math. I think we all could. This would work well with the Smartboard in your room. See how it works in your class.
Give it a try!