When six monsters get together to play musical chairs, you'd better watch out! "Stomp, stomp, SNORT. Shake, shimmy, SHOUT! When the music stops, one monster is OUT!," sings the leader of the monster band. One by one the players are tagged out until there's only one left: The winner!

Knowing how many objects are left when one is taken away from a group is a first step in understanding the concept of subtraction.