You're kids are going to love this game to work on their math facts. I've played it with first graders. I've played it with fifth graders. Kids love this game, no matter their age. These problems, of course, are for an early elementary age. The teacher hides these problems around the room, and the students sneak around the room with "sneaky music" looking for them and writing them down on the line next to the sum. Students are on-task and having fun! It's a great math warm-up. I've only played it as whole group, but I think you could make it work for centers as well. Just know they'll be moving around the room or a section of the room at least! :) Enjoy!