Creating grid games from classroom materials can be a great opportunity for fun and mathematical discussions involving small sets. This teacher has customized her own dot cube with 1, 2, 3, and 4 dots. She is looking to see what quantities her students can subitize and count out. Of course, there’s lots of natural practice with one-to-one correspondence built into this simple, but mathematically rich game. As researchers point out, making math fun is important. Games are a great way to do that.