Out in Out is a fun addition or subtraction game that I changed up a bit from (Adventures of First Grade). The students in my room have a fast finisher folder (click here to learn more about that), inside I made a sheet that simply says: out, in and out. then on the other side I put three blank lines. The students pick up 10 cubes, and drop them down on their sheet. They could how many landed out, how many landed in, and then add how many there all altogether, writing the addition sentence. Then they switch to subtraction, pick ten up, and drop them. How many do you have altogether, minus how many fell out, equals how many are left in. They love it!