This fun icebreaker is great to start your class getting to know one another.
The students have to find someone different to sign in each box and when they have signatures in a row/column/diagonal, or finally in every box, they call out, "Bingo!".
I get the students to call for a line first and the whole grid. At the end of the game, I go through the list with the students to see which students could have filled in a box. It always brings hilarity and sighs of exasperation.
It's even more fun when the teacher joins in.