I made this little operation application a few years ago in Seattle. It was fun, and I used it every year for practicing exponent rules, but I never ended up building other stuff for other units. It would be very easy to do so.
WARNING: this game requires the game operation, which has lots of little pieces, and batteries. This game is fun, but not something that I think scales very well to a class of more than 12 or 15 kids.
Anyway, you group kids, and have them take turns playing the game operation. If they successfully remove a piece from the board, the OTHER students must solve the corresponding problem from the sheet below.
I tried to attach the harder problems to the harder pieces from the gameboard to remove. There is also an answer key in the documents below that I printed out in a different color so kids could check their work.
Scrub up! It’s surgery time!
Cantankchris Math 