Students add 1 to a set of objects from 1-20. Game is played similar to Tic-Tac-Toe with students matching three in a row either across, down or diagonal. You may choose to have students fill all spaces.
The Caller turns over one call card at a time. Students must count the objects or use their knowledge of adding 1 more to match the answer that is called. (ex. 13=12+1 on their card and etc..)