Just found out about a new site called Purpose Games.  It's at http://www.purposegames.com/  You can make interactive games with a free membership or you cam play games that are already created.  If you have students who register, they could even make learning games for review activities.

I have not spent much time with it.  Maybe a half hour so far, but am already seeing the potential.  I created a quick matching game by using a photo I had of a corsage on my computer to create a corsage component ID game.  It's at http://www.purposegames.com/game/corsage-components-quiz and once you choose start, you'll see a clue appear in the upper right.  Just click on the blue dot that it matches.  I don't have a SmartBoard, but I am sure thsi could be used with them somehow.

As I create more games, I will try to include agriculture in the tag so "our" Ag games are easier for us to find.  Please share if you create any!