Hi Chad,
I played Prove It! with my students last year. Heather is right, you use RTQ's from state tests that are multiple choice questions. I had my students solve the problem on their whiteboards, then they had to prove why the other 3 choices were wrong. The Prove It! game allows students to dive deeper into the curriculum while they are using higher level thinking to figure out why the other multiple choice answers are incorrect.
I used RTQ's from the California State Test (CST) as well as a website called
www.highstakesmath.com. You can also use RTQ's from other states if you match them up to the standards for your grade level.
We did this everyday and my students even applied it to their CST this year!
Good luck and I hope this helps!
Tiffany
WBT Intern, 2011-2012