I’m going to go out on a limb and say this is new for most folks as I’ve never done it nor have I heard of anyone doing this, but I loved it as a review activity.
It’s called the Three 3’s.
It get’s kids out of their seats, talking to at least 9 other students, summarizing their peers answers, and allowing them to articulate their own answers all in one 3 x 3 grid of questions.
Here is the example I showed in the video for my Pre-Algebra class.
I got the idea from a book called Total Participation Techniques.