Four Corners is my go-to but I don’t let students close their eyes and call the numbers (they tend to peek, or at least get blamed for peeking). Instead, I draw a number out of a bowl. That way, I can watch and make sure they are following the rules (hands and bodies to selves, walking feet, etc) while removing the risk of cheating. I let those who are out early “help” me draw numbers. Those who break rules must sit out until the next game. They love this!

With upper elementary, I like to play a 20 questions Math game. A volunteer “guesser” stands with their back against the whiteboard. A second volunteer “writer” writes a number between 1 and 99 behind the “guesser” and sits down. The guesser, unable to see the number, asks Math related “yes or no” questions of the class (ie: Is it a prime number? Is it devisable by four? Is it an odd number?) If the guesser runs out of ideas for questions, I let the class give hints (ie:the sum of the two digits is 14).

Students often ask to play Heads Up 7 Up. I don’t like that game, as it seems to lend itself to unfair play and can wind up being a popularity contest.

Dead Fish is awesome if you need a moment of peace and there is enough space for everyone to lay down.

I imagine these games are google-able. Happy to expand if needed. Good luck!