This is a weekly spelling contract in the tic-tac-toe format., where students pick three assignments but have to pass through the center box.  I have used this for years, and the kids love it because it differentiates the spelling homework for the students.  You can use it in a variety of ways.  If you want them to do more than three, you can have them pick 3 and add one more.  It is quite flexible,  I will be adding more of these contracts with cute clip art.  :)