When trying to focus, use one of two playlists - one with soft, flowing "field music" and the other with high-intensity "battle music." To keep from being distracted, don't use songs with lyrics in a language that you understand.
Spelling Battleship - This is a two player game. Before playing each student needs to fill in one side of the game board with six of their spelling words going across (one letter per box). The first player needs to guess a coordinate and the other student has to tell them if they hit a letter. Battleship play continues until the first player sinks all the other's words!