Divide your class into teams of x's and o's and give each an index card with their team symbol on it. They get in single file lines and the teacher gives one student a word to spell. If he/she spells it correctly, then he/she gets to choose a square on the tic-tac-toe board. If a word is misspelled, the team member heads to the back of the line. Who will get three in a row first?