Last night I was searching the app store and come across an app call 5 Dice.  I though it could easily be adopted into any classroom, elementary, middle, or high school.  I found it fun and engaging.

5 Dice is a math game intended for upper elementary and middle school students that helps students enjoy practicing their order of operations. The game encourages students to use higher order thinking to solve the “target” number by working backwards given the answer but not the equation. The best feature about this simple math game is that teachers are able to receive immediate feedback of their students’ progress through email.